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Journal articles on the topic 'Post Etch Residue Removal'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Lee, Hong-Ji, Che-Lun Hung, Chia-Hao Leng, et al. "Etch Defect Characterization and Reduction in Hard-Mask-Based Al Interconnect Etching." International Journal of Plasma Science and Engineering 2008 (September 23, 2008): 1–5. http://dx.doi.org/10.1155/2008/154035.

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This paper identifies the defect adders, for example, post hard-mask etch residue, post metal etch residue, and blocked etch metal island and investigates the removal characteristics of these defects within the oxide-masked Al etching process sequence. Post hard-mask etch residue containing C atom is related to the hardening of photoresist after the conventional post-RIE ashing at 275∘C. An in situ O2-based plasma ashing on RIE etcher was developed to prevent the photoresist hardening from the high-ashing temperature; followed wet stripping could successfully eliminate such hardened polymeric

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2

Pollard, Kimberly, Meng Guo, Richie Peters, et al. "Efficient TSV Resist and Residue Removal in 3DIC." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2014, DPC (2014): 001435–69. http://dx.doi.org/10.4071/2014dpc-wp12.

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The continuing challenge to meet the need for lighter, smaller, faster and smarter electronic systems has pushed the advancement of 2.5D and 3D technology. The ability to create and integrate through-silicon vias (TSV) into device designs in 2.5- and 3-D platforms allows a decrease in interconnection path length, which results in improved device performance and reliability in a small form factor. Mainly due to its high silicon etch rate and selectivity to mask materials, the Bosch process is often used in the TSV fabrication. In this process, the silicon via is created by the deep reactive ion

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3

young-tack, Hong, Young il Kim, Moon-chul Lee, et al. "Post-etch residue removal in BCB/Cu interconnection structure." Thin Solid Films 435, no. 1-2 (2003): 238–41. http://dx.doi.org/10.1016/s0040-6090(03)00332-8.

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4

Thanu, D. P. R., S. Raghavan, and M. Keswani. "Post Plasma Etch Residue Removal in Dilute HF Solutions." Journal of The Electrochemical Society 158, no. 8 (2011): H814. http://dx.doi.org/10.1149/1.3597618.

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5

Cazes, M., Christian Pizzetti, Jerome Daviot, et al. "Customized Chemical Compositions Adaptable for Cleaning Virtually all Post-Etch Residues." Solid State Phenomena 282 (August 2018): 121–25. http://dx.doi.org/10.4028/www.scientific.net/ssp.282.121.

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A post-etch residue cleaning formulation, based on balancing the aggressiveness of hydrofluoric acid with its well-known residue removal properties is introduced. In a series of investigations originally motivated by the cleaning challenge provided by high-k dielectric-based residues, a formulation platform is developed that successfully cleans residues resulting from the plasma patterning of tantalum oxide and similar materials while maintaining metal and dielectric compatibility. It is further shown that the fundamental advantages of this solution can be extended to the cleaning of other, mo

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6

Le, Quoc Toan, F. Drieskens, T. Conard, et al. "Modification of Post-Etch Residues by UV for Wet Removal." Solid State Phenomena 187 (April 2012): 207–10. http://dx.doi.org/10.4028/www.scientific.net/ssp.187.207.

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In back-end of line processing, the polymer deposited on the dielectric sidewalls during the etch must be removed prior to subsequent processing steps to achieve high adhesion and good coverage of materials deposited in the etched features [1,. Typically, this is done by a combination of short plasma treatment and diluted wet clean, or by wet cleans alone. On the one hand, for porous dielectric stacks, a mild plasma treatment that preserves the integrity of the low-k dielectrics would not be sufficient to efficiently remove this residue. Furthermore, aqueous cleaning solutions is not efficient

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7

Mauer, Laura, John Taddei, Ramey Youssef, Kimberly Pollard, and Allison Rector. "TSV Resist and Residue Removal." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2011, DPC (2011): 001596–620. http://dx.doi.org/10.4071/2011dpc-wp14.

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3D integration is the most active methodology for increasing device performance. The ability to create Through Silicon Vias (TSV) provides the shortest path for interconnections and will result in increased device speed and reduced package footprint. There are numerous technical papers and presentations on the etching and filling of these vias, however the process for cleaning is seldom mentioned. Historically, after reactive ion etching (RIE), cleaning is accomplished using an ashing process to remove any remaining photoresist, followed by dipping the wafer in a solution-based post etch resid

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8

Le, Quoc Toan, Els Kesters, I. Hoflijk, et al. "Characterization of Etch Residues Generated on Damascene Structures." Solid State Phenomena 255 (September 2016): 227–31. http://dx.doi.org/10.4028/www.scientific.net/ssp.255.227.

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For patterned TiN/silicon oxide/low-k dielectric stack, fluorinated etch residues were detected on the TiN surface, the dielectric sidewall and bottom, regardless of the low-k material used in the stack. XPS results showed that they consisted of polymer-based (CFx) residues deposited on trench sidewall and bottom, and metal-based (TiFx) residues mainly deposited on top surface. In terms of post-etch residue removal, the efficiency of various wet clean solutions can be clearly distinguished for CFx, and TiFx using the same patterned porous low-k stack. These results also demonstrate that the re

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9

Myneni, Satyanarayana, and Dennis W. Hess. "Post-Plasma-Etch Residue Removal Using CO[sub 2]-Based Fluids." Journal of The Electrochemical Society 150, no. 12 (2003): G744. http://dx.doi.org/10.1149/1.1621879.

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10

Akanishi, Yuya, Quoc Toan Le, and Efrain Altamirano Sánchez. "Removal of Post Etch Residue on BEOL Low-K with Nanolift." Solid State Phenomena 314 (February 2021): 277–81. http://dx.doi.org/10.4028/www.scientific.net/ssp.314.277.

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Particle removal from BEOL low-k structures is studied using a novel particle removal technique, called Nanolift which removes particles from the substrate by forming a thin polymer film on the surface and removing the polymer film together with the particles. It was confirmed that Nanolift is capable to remove TiFx particles successfully which are generated during the low-k dry etch process for dual damascene structure formation for BEOL interconnect fabrication. Pattern collapse of the fragile low-k structure was confirmed to be prevented by Nanolift in comparison with conventional dual flui

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11

Kesters, Els, Q. T. Le, D. Yu, et al. "Post Etch Residue Removal and Material Compatibility in BEOL Using Formulated Chemistries." Solid State Phenomena 219 (September 2014): 201–4. http://dx.doi.org/10.4028/www.scientific.net/ssp.219.201.

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A possible way to realize a 22.5 nm 1⁄2 pitch and beyond BEOL interconnect structures within the low-kmaterial is the partial-trench via first with self-aligned double patterning (SADP) integration approach. A scheme of this BEOL integration stack with the different materials used after patterning is described in Figure 1. In BEOL processing, fluorocarbon-containing plasma is commonly used to pattern silica-based dielectric layers. During the patterning of the low-kdielectric layer, a thin layer of fluoropolymer (CFx-type residues) is intentionally deposited on the dielectric sidewalls and TiN

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12

De Gendt, Stefan, P. Snee, I. Cornelissen, et al. "A Novel Resist and Post-Etch Residue Removal Process Using Ozonated Chemistry." Solid State Phenomena 65-66 (November 1998): 165–68. http://dx.doi.org/10.4028/www.scientific.net/ssp.65-66.165.

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13

Hayashida, Atsushi, Akiko Seki, Takashi Mashiko, Toshiyuki Sanada, and Masao Watanabe. "Removal of Post-dry Etch Residue uing Ultra Low Environmental Load Technique." ECS Transactions 25, no. 5 (2019): 249–56. http://dx.doi.org/10.1149/1.3202660.

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14

Liu, Bing, Libbert Peng, Julia Peng, Joey Yu, and Shumin Wang. "Material Etch Rate Control in the Fluoride Containing Stripper for Post Etch and Ashing Residue Removal." ECS Transactions 18, no. 1 (2019): 635–39. http://dx.doi.org/10.1149/1.3096513.

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15

Kabansky, Alexander, Glenn Westwood, Samantha Tan, et al. "Optimization of Cu/Low-k Dual Damascene Post-Etch Residue and TiN Hard Mask Removal." Solid State Phenomena 255 (September 2016): 237–41. http://dx.doi.org/10.4028/www.scientific.net/ssp.255.237.

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For advanced technology nodes TiN hard mask integration into Cu/low-k via/trench DD process requires the mask to be fully stripped after DD etching. The one-step H2O2 containing wet chemical clean aiming to removing TiN mask often failed to simultaneously clean etch residue. We developed more reliable two-step wet chemical process combining a solvent-based post-etch residue clean followed by a solvent/H2O2 mixture strip for TiN mask removal. Bath lifetime optimization was also demonstrated.

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16

Vos, Ingrid, David Hellin, Guy Vereecke, Elizabeth Pavel, Werner Boullart, and Johan Vertommen. "Effect of etch-clean delay time on post-etch residue removal for front-end-of-line applications." Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures 27, no. 5 (2009): 2301. http://dx.doi.org/10.1116/1.3225596.

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17

Starov, V., D. Beery, and Alex Kabansky. "Integrated Cleaning: Application of Densified Fluid Cleaning (DFC) to Post-Etch Residue Removal." Solid State Phenomena 65-66 (November 1998): 195–98. http://dx.doi.org/10.4028/www.scientific.net/ssp.65-66.195.

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18

Taubert, Jenny, Manish Keswani, and Srini Raghavan. "Post-etch residue removal using choline chloride–malonic acid deep eutectic solvent (DES)." Microelectronic Engineering 102 (February 2013): 81–86. http://dx.doi.org/10.1016/j.mee.2011.11.014.

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19

Myneni, Satyanarayana, and Dennis W. Hess. "Post Plasma Etch Residue Removal Using CO[sub 2]-Based Mixtures: Mechanistic Considerations." Journal of The Electrochemical Society 152, no. 10 (2005): G757. http://dx.doi.org/10.1149/1.2007147.

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20

Payne, Makonnen, Steven Lippy, Ruben R. Lieten, et al. "Evaluation of Post Etch Residue Cleaning Solutions for the Removal of TiN Hardmask after Dry Etch of Low-k Dielectric Materials on 45 nm Pitch Interconnects." Solid State Phenomena 255 (September 2016): 232–36. http://dx.doi.org/10.4028/www.scientific.net/ssp.255.232.

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In the BEOL, as interconnect dimensions shrink and novel materials are used, it has become increasingly difficult for traditional PERR removal chemicals to meet the evolving material compatibility requirements. As a result, formulated cleans that specifically target these unique challenges are required. Two formulated BEOL cleans were evaluated on blanket and patterned wafer coupons for their ability to wet etch titanium nitride (TiN) and clean post-plasma etch residue, while remaining compatible to interconnect metals (Cu and W) and low-k dielectric (k = 2.4). Both, showed an improvement in m

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21

Heidenblut, Maria, D. Sturm, Alfred Lechner, and Franz Faupel. "Characterization of Post Etch Residues Depending on Resist Removal Processes after Aluminum Etch." Solid State Phenomena 145-146 (January 2009): 349–52. http://dx.doi.org/10.4028/www.scientific.net/ssp.145-146.349.

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The subject of this report is the characterization of plasma etch residues after a metal etch process with Cl2/BCl3 etch gases. One of the interactive factors in the removability of the residues is the photo-mask removal process (DSQ). Depending on the DSQ process the molecular structure of the residues will differ. For our findings, we used laser spectroscopy and Fourier-transformed infrared spectroscopy to obtain information about the degree of the cross-linking of the molecular structure of residues in a post-metal etch cleaning process. The post-etch cleaning is important for removing resi

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22

Gemmill, William R., Els Kesters, and Quoc Toan Le. "One-Step Wet Clean Removal of Post-Etch Fluoropolymer Residues." Solid State Phenomena 195 (December 2012): 136–38. http://dx.doi.org/10.4028/www.scientific.net/ssp.195.136.

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Back end of the line processing requires removal of deposited polymers resulting from etch processes. These polymers typically exist on the whole of the pattern including the dielectric sidewalls and can be removed by wet cleans or a combination of wet cleans and plasma treatments. When a porous dielectric is present these residues cannot be efficiently removed using plasma or certain wet cleans without potentially damaging the underlying porous dielectric layer. Therefore there exists a need for a one-step wet clean that can completely remove the residues without damaging the porous dielectri

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23

Chen, Bing-Hung, Hao Zhang, Chooi, Lap Chan, Y. Xu, and J. H. Ye. "Corrosive Behavior of Tungsten in Post Dry-Etch Residue Remover." Industrial & Engineering Chemistry Research 42, no. 24 (2003): 6096–103. http://dx.doi.org/10.1021/ie030025h.

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24

Kesters, Els, Q. T. Le, I. Simms, K. Nafus, H. Struyf, and S. De Gendt. "Wet Removal of Post-Etch Residues by a Combination of UV Irradiation and a SC1 Process." Solid State Phenomena 195 (December 2012): 114–18. http://dx.doi.org/10.4028/www.scientific.net/ssp.195.114.

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In back-end of line processing (BEOL), the polymer deposited on the dielectric sidewalls during the etch process must be removed prior to subsequent processing steps to achieve high adhesion and good coverage of materials deposited in the etched features [1, . Typically, this is done by a combination of a short plasma treatment and a diluted wet clean, or by wet cleans alone. On the one hand, for porous dielectric stacks, a mild plasma treatment that preserves the integrity of the low-k dielectrics would not be sufficient to effectively remove this residue. With regard to wet clean, diluted aq

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25

Hsu, Chia Jung, Chieh Ju Wang, Sheng Hung Tu, Makonnen Payne, Emanuel Cooper, and Steven Lippy. "High Throughput Wet Etch Solution for BEOL TiN Removal." Solid State Phenomena 255 (September 2016): 245–50. http://dx.doi.org/10.4028/www.scientific.net/ssp.255.245.

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Sub-10 nm technology node manufacturing processes may require the use of thicker and denser TiN hard mask for patterning at the BEOL. The modified TiN, which tends to be more chemically robust, must be removed using a wet etch process, while maintaining typical throughput - no extension of typical wet etch process times. To satisfy these needs, a new TiN etching accelerator was found that enhanced the activity of peroxide-related species in a wet etch chemical formulation that achieved increased TiN etch rate relative to formulation without TiN etch rate accelerator (Sample 1), while also mini

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26

Wei, Joyce C., and Micky Huang. "New Al Post-Etch Residue Remover with Al Surface Passivation Function." ECS Transactions 34, no. 1 (2019): 343–48. http://dx.doi.org/10.1149/1.3567601.

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27

Iwasaki, Akihisa, Kristell Courouble, Steven Lippy, et al. "Industrial Challenges of TiN Hard Mask Wet Removal Process for 14nm Technology Node." Solid State Phenomena 219 (September 2014): 213–16. http://dx.doi.org/10.4028/www.scientific.net/ssp.219.213.

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TiN Hard Mask (TiN-HM) integration scheme has been widely used for BEOL patterning in order to avoid ultra low-k (ULK) damage during plasma-ash process [1]. As the technology node advances, new integration schemes have to be used for the patterning of features below 80 nm pitch with 193 nm immersion lithography. In particular, thicker TiN-HM is necessary in order to ensure Self-Aligned-Via (SAV) integration which resolves via-metal short yield and TDDB issues caused by Litho-Etch-Litho-Etch (LELE) misalignment [2, 3]. The Cu filling process is significantly more difficult if the thick TiN is n

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28

Suhard, Samuel, Martine Claes, James Loh, et al. "Screening and Evaluation of Different Wet Cleaning Solutions for Post Etch Residue Removal in BEOL Applications." ECS Transactions 25, no. 5 (2019): 101–7. http://dx.doi.org/10.1149/1.3202641.

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29

Reid, Chris, Jerome Daviot, and Douglas Holmes. "Advanced Aqueous Cleaner II: PER Removal from Sensitive Cu/Low-k Devices." Solid State Phenomena 103-104 (April 2005): 373–76. http://dx.doi.org/10.4028/www.scientific.net/ssp.103-104.373.

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This paper described the development of two types of Advanced Aqueous Cleaners (AAC™) for Aluminium (Al) Post Etch Residue (PER) removal. The first approach was developed to address a need for cleaning chemistries with a smaller environmental footprint that were also able to clean at significantly lower process times and temperatures than conventional wet chemical cleans. A broad screening experiment was undertaken during which it was highlighted it was possible to clean Al lines in an acidic region though this technology was not extendable to cleaning via features. However, the study emphasis

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30

Suzuki, Tomoko, Atsushi Otake, and Tomoko Aoki. "Design and Development of Novel Remover for Cu/Porous Low-k Interconnects." Solid State Phenomena 145-146 (January 2009): 315–18. http://dx.doi.org/10.4028/www.scientific.net/ssp.145-146.315.

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At 32nm and below the integration of extreme low-k dielectrics (ELK) with a permittivity of 2.2 or lower will require considerable process optimization at etch and clean to maintain critical dimension (CD) and effective k. Of equal concern is the impact on yield and reliability of lateral Cu etch or incomplete removal of copper oxides (CuOx) during post etch residue (PER) cleaning. These are not new issues but the challenges of solving them in the presence of ELK’s are considerable not least in relation to the question of selectivity towards “damaged low k” interfaces, often described as densi

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31

Mellies, Raimund, Stefan Kunz, Franz Nilius, Dieter Mayer, and Andreas Kühner. "New Post Etch Polymer Removal Process for Al-Interconnects and Vias in Tank and Spray Tools Using a New Inorganic Chemistry." Solid State Phenomena 103-104 (April 2005): 381–84. http://dx.doi.org/10.4028/www.scientific.net/ssp.103-104.381.

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A Post-Etch-Residue (PER) removal process for tank and spray tools has been developed using a new inorganic aqueous based chemistry. The performance of this new type of polymer remover, Inosolv 400 Fotopur®, on process wafers is compared with other inorganic chemistries such as DSP (Dilute Sulphuric acid hydrogen Peroxide) and DSP+, containing traces of HF. Inosolv 400 Fotopur® has improved polymer removal capabilities. Furthermore Inosolv 400 Fotopur® does not show any attack of the metal or dielectric layers and is inorganic based and thus environmentally friendly.

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32

Sharma, Asha, Bruce Gondeck, Sunil Singh, Teck Jung Tang, Silas Scott, and Philippe Helal. "Optimization of Wet Strip for Metal Void Reduction in Trench First Metal Hard Mask Back End of Line Process." Solid State Phenomena 282 (August 2018): 250–55. http://dx.doi.org/10.4028/www.scientific.net/ssp.282.250.

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The purpose of this paper is to study the effects of wet strip clean for metal void reduction in trench first metal hard mask back end of line (BEOL) integration process in 14 nm Technology. A thicker TiN film is becoming important to resolve via-metal short yield and time-dependent dielectric breakdown (TDDB) issues caused by the Litho-Etch-Litho-Etch (LELE) misalignment due to smaller patterning features. This brings the multitude of advanced integration technology need for complete TiN hard mask (HM) removal, post etch residue removal, ultra low-k dielectric (ULK) and Cu stability, intercon

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33

Lee, Hun Hee, Min Sang Yun, Hyun Wook Lee, and Jin Goo Park. "Removing W Polymer Residue from BEOL Structures Using DSP⁺ (Dilute Sulfuric-Peroxide-HF) Mixture – A Case Study." Solid State Phenomena 195 (December 2012): 128–31. http://dx.doi.org/10.4028/www.scientific.net/ssp.195.128.

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As the feature size of semiconductor device shrinks continuously, various high-K metals for 3-D structures have been applied to improve the device performance, such as high speed and low power consumption. Metal gate fabrication requires the removal of metal and polymer residues after etching process without causing any undesired etching and corrosion of metals. The conventional sulfuric-peroxide mixture (SPM) has many disadvantages like the corrosion of metals, environmental issues etc., DSP+(dilute sulfuric-peroxide-HF mixture) chemical is currently used for the removal of post etch residues

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34

Luo, Victor, Jason Chang, Kevin Shi, et al. "Effect of De-ionized Water Rinse in AlCu Line Post Etch Asher Residue Removal Process Using Fluoride Containing Stripper." ECS Transactions 44, no. 1 (2019): 319–23. http://dx.doi.org/10.1149/1.3694333.

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35

Kirk, Simon J., and Robert Small. "The Effect of DI Water and Intermediate Rinse Solutions on Post Metal Etch Residue Removal Using Semi-Aqueous Cleaning Chemistries." Solid State Phenomena 76-77 (January 2001): 307–10. http://dx.doi.org/10.4028/www.scientific.net/ssp.76-77.307.

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36

Iwasaki, Akihisa, Ayumi Higuchi, Kana Komori, et al. "Rapid Recovery Process of Plasma Damaged Porous Low-k Dielectrics by Wet Surface Modifying Treatment." Solid State Phenomena 255 (September 2016): 223–26. http://dx.doi.org/10.4028/www.scientific.net/ssp.255.223.

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A rapid repair process of plasma damaged SiCOH in combination with post-etch residue removal has been developed. The carbon depletion layer caused by plasma dry etching was repaired by subsequent surface modifying SAM treatment, which resulted in replenishment of carbon not only on the surface but also a few nm toward the bulk. This repairing technique provides a high-quality hydrophobic surface under conditions of low temperature and short process time. In addition, the SAM layer can be expected to act as an adhesion promotor with metal materials.

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37

Levitin, Galit, Satyanarayana Myneni, and Dennis W. Hess. "Post Plasma Etch Residue Removal Using CO[sub 2]-TMAHCO[sub 3] Mixtures: Comparison of Single-Phase and Two-Phase Mixtures." Journal of The Electrochemical Society 151, no. 6 (2004): G380. http://dx.doi.org/10.1149/1.1723503.

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38

Jung, Jae Mok, Hullathy Subban Ganapathy, Haldorai Yuvaraj, Keith P. Johnston, and Kwon Taek Lim. "Removal of HF/CO2 post-etch residues from pattern wafers using water-in-carbon dioxide microemulsions." Microelectronic Engineering 86, no. 2 (2009): 165–70. http://dx.doi.org/10.1016/j.mee.2008.09.006.

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39

Le, Q. T., M. Claes, T. Conard, E. Kesters, M. Lux, and G. Vereecke. "Removal of post-etch photoresist and sidewall residues using organic solvent and additive combined with physical forces." Microelectronic Engineering 86, no. 2 (2009): 181–85. http://dx.doi.org/10.1016/j.mee.2008.09.029.

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40

Le, Q. T., J. F. de Marneffe, T. Conard, I. Vaesen, H. Struyf, and G. Vereecke. "Effect of UV Irradiation on Modification and Subsequent Wet Removal of Model and Post-Etch Fluorocarbon Residues." Journal of The Electrochemical Society 159, no. 3 (2012): H208—H213. http://dx.doi.org/10.1149/2.008203jes.

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41

Daviot, Jerome, Chris Reid, and Douglas Holmes. "Advanced Aqueous Cleaner I, Dilute Solutions for the Selective Removal of Post Etch Residues in the Presence of Aluminium." Solid State Phenomena 103-104 (April 2005): 377–80. http://dx.doi.org/10.4028/www.scientific.net/ssp.103-104.377.

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42

Claes, Martine, Vasile Paraschiv, S. Beckx, et al. "Selective Wet Removal of Hf-Based Layers and Post-Dry Etch Residues in High-k and Metal Gate Stacks." Solid State Phenomena 103-104 (April 2005): 93–96. http://dx.doi.org/10.4028/www.scientific.net/ssp.103-104.93.

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43

Taubert, Jenny, and Srini Raghavan. "Effect of composition of post etch residues (PER) on their removal in choline chloride–malonic acid deep eutectic solvent (DES) system." Microelectronic Engineering 114 (February 2014): 141–47. http://dx.doi.org/10.1016/j.mee.2012.12.009.

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44

Levitin, Galit, Christopher Timmons, and Dennis W. Hess. "Photoresist and Etch Residue Removal." Journal of The Electrochemical Society 153, no. 7 (2006): G712. http://dx.doi.org/10.1149/1.2203096.

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45

Rai, Priyanka, Alok Srivastava, Ishwar R. Dhayal, and Sanjeet Singh. "Comparison of Safety, Efficacy and Cost Effectiveness of Photoselective Vaporization with Bipolar Vaporization of Prostate in Benign Prostatic Hyperplasia." Current Urology 11, no. 2 (2017): 103–9. http://dx.doi.org/10.1159/000447202.

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Objectives: To compare bipolar vaporization of prostate (BPVP) with photoselective vaporization (PVP) of prostate in the surgical management of benign prostatic hyperplasia in terms of safety, efficacy and cost effectiveness. Methods: Data was analyzed retrospectively for patients who underwent either PVP or BPVP between August 2012 to July 2014 for prostate size ≤ 80 ml. Preoperative and postoperative period values along with details like operative time, blood loss, hospitalization days, catheter removal time, blood transfusion and etc., were noted down. International prostatic symptom score,

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46

Peters, Richard, Yuanmei Cao, Kim Pollard, Don Pfettscher, and Mike Phenis. "Formulation Development for Bosch Etch Residue Removal: Effect of Solvent on Removal Efficiency." International Symposium on Microelectronics 2015, no. 1 (2015): 000121–25. http://dx.doi.org/10.4071/isom-2015-tp45.

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The Bosch etch process is a critical process step used to create through silicon vias (TSVs) for 3D integrated circuit manufacturing. During the Bosch etch, a fluoropolymer passivation layer is formed on the sidewall of TSVs to help achieve a vertical profile and to protect the exposed dielectric materials. The fluoropolymer residue on the sidewalls in the TSVs must be removed prior to subsequent process steps. The highly fluorinated character of the fluorocarbon polymer residue makes its complete removal challenging due to characteristics such as limited solubility in solvents and slow or no

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Vos, Ingrid J., David Hellin, Steven Demuynck, et al. "A Novel Concept for Contact Etch Residue Removal." ECS Transactions 11, no. 2 (2019): 403–7. http://dx.doi.org/10.1149/1.2779404.

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Cui, H. "TiN Hardmask Etch Residue Removal for Cu Interconnect Fabrication." ECS Transactions 60, no. 1 (2014): 373–77. http://dx.doi.org/10.1149/06001.0373ecst.

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Kleemeier, W., V. Leon, and S. Graham. "Plasma Etch Residue and Photoresist Removal Utilizing Environmentally Benign Process Chemicals." Solid State Phenomena 65-66 (November 1998): 143–52. http://dx.doi.org/10.4028/www.scientific.net/ssp.65-66.143.

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Kim, Tae Gon, Quoc Toan Le, Samuel Suhard, et al. "Characterization of Low-k Dielectric Etch Residue on the Sidewall by Chemical Force Microscope." Solid State Phenomena 187 (April 2012): 197–200. http://dx.doi.org/10.4028/www.scientific.net/ssp.187.197.

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Abstract:

Atomic force microscope (AFM) with inclined sample measurement and hydrophobic functionalized AFM probe was used to visualize the sidewall of low-k pattern and allowed to characterize the hydrophobic characteristics on the sidewall after low-k etch. To functionalized the AFM probe, 1H,1H,2H,2H-Perfluorodecyltrichlorosilane (FDTS) as a hydrophobic film was coated on an AFM probe. Because of the magnitude of the phobic-phobic interaction force and the tip forced to make a phase shift. Using this technique the visualization and characterization of the etch residue on the low-k sidewall can be suc

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