Abstract
The data on the defects formed in vapor-deposited thin borophosphosilicate glass layers upon their interaction with surrounding atmosphere are analyzed. The formation, growth, and evolution of defects in glasses are studied. The classification of defects is proposed, and the concentration ranges of the existence of the specified defects are determined. The nature of defects in the borophosphosilicate glass layers is discussed, and the mechanism of their formation is advanced.
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Dukhanova, T.G., Vasil’ev, V.Yu., and Veretenin, Yu.I., Preparation, Properties, and Application of Borophos-phorosilicate Glass Layers in Integrated Circuit Technology, inObzory Elektron. Tekh., Ser. 3, Moscow: TsNII “Elektronika,” 1988, no. 4, pp. 1–72.
Vassiliev, V.Y., Modern BPSG Film Technology,Visual Booklet of Short Courses at IV Int. Dielectric for ULSI Multilevel Interconnection Conf., Santa Clara (USA), 1998, pp. 111–192.
Kern, W. and Schnable, G.L., Chemically Vapor-Deposited Borophosphosilicate Glasses for Silicon Device Applications,RCA Rev., 1982, vol. 82, no. 3, pp. 423–457.
Learn, A. and Baerg, B., Growth of Borosilicate and Borophosphosilicate Films at Low Pressure and Temperature,Thin Solid Films, 1985, vol. 130, nos. 1–2, pp. 103–111.
Becker, F.S., Pawlik, D., Schafer, H., and Staudigl, G., Process and Film Characterization of Low Pressure Tetraethylorthosilicate-Borophosphosilicate Glass,J. Vac. Sci. Technol., B, 1986, vol. 4, no. 3, pp. 732–744.
Watkins-Johnson Company Information Material, inSolid State Technol., 1986, vol. 29, no. 5, pp. 100–101.
Susa, M., Hiroshima, Y., Senda, K., and Takamura, T., Borophosphosilicate Glass Flow in a PH3-O2 Ambient,J. Electrochem. Soc., 1986, vol. 134, no. 7, pp. 1517–1518.
Williams, D.S. and Dean, E.A., LPCVD of Borophosphosilicate Glass from Organic Reactants,J. Electrochem. Soc., 1987, vol. 134, no. 3, pp. 657–664.
Vasil’ev, V.Yu. and Dukhanova, T.G., Optimum Composition of a Borophosphorosilicate Glass for Integrated Circuit Technology,Elektron. Prom-st., 1988, no. 3, p. 31.
Schnable, G.L., Fisher, A.W., and Shaw, J.M., Devitrification in Borophosphosilicate Glass Films Used in VLSI,J. Electrochem. Soc., 1990, vol. 137, no. 12, pp. 3973–3974.
Nauka, K. and Liu, C., Suppression of Water Absorption in Borophosphosilicate Glass Thin Layers with High Boron Concentration,J. Electrochem. Soc., 1991, vol. 138, no. 8, pp. 2367–2370.
Ahmed, K. and Geisert, C., Borophosphosilicate Glass Crystal Induction and Suppression,J. Vac. Sci. Technol., A, 1992, vol. 10, no. 2, pp. 313–315.
Imai, S., Yabuuchi, Y., Terai, Y., Yasui, T., Kudo, C., Nacao, I., and Fukumoto, M., Identification of Segregation from Borophosphosilicate Glass Films during Annealing,Appl. Phys. Lett., 1992, vol. 60, no. 22, pp. 2761–2763.
Coniff, J., Shenasa, M., Krott, L., and Woessner, S., BPSG Reflow-Induced Defect Suppression for Submicron Interconnect Technology,Proc.—Electrochem. Soc. (Pennington, NJ), 1993, vol. 93-25, pp. 84–90.
Shenasa, M., Coniff, J., and Kudla, J.P., Defect Density Study of BPSG Reflow Process for 0.5 Μm CMOS Technology in a Vertical Thermal Reactor,Proc-Electrochem. Soc. (Pennington, NJ), 1993, vol. 93-25, pp. 91–99.
Fisher, S.M., Chino, H., Maeda, K., and Nishimoto, Y., Characterizing B-, P-, and Ge-Doped Silicon Oxide Films for Interlevel Dielectrics,Solid State Technol., 1993, vol. 36, no. 9, pp. 55–58.
Wilson, J. and Stepens, T., Defect Reduction in Semiconductor Manufacturing: A Case Study of BPO4 Elimination in BPSG Films,Proc. MRS Symp. (Pittsburgh, Pe), 1993, vol. 284, pp. 211–216.
Li, J., Fardi, B., Thach, M.D., Moinpour, M., and Mogdaham, F., Defect Characterization in RTP Densified BPSG Films,Proc. I Int. Dielectric for ULSI Multilevel Interconnection Conf., Santa Clara (USA), 1995, pp. 124–130.
Yoshimaru, M. and Wakamatsu, H., Microcrystal Growth on Borophosphosilicate Glass Film during High-Temperature Annealing,J. Electrochem. Soc., 1996, vol. 143, no. 2, pp. 666–671.
Matsumoto, S., Hattori, T., Hata, Y., and Ogawa, H., Suppression of BPO4 Precipitates in Borophosphosilicate Glass Film during Annealing,Proc. XXIII Int. VLSI Multilevel Interconnection Conf., Santa Clara (USA), 1996, pp. 122–124.
Chu, J.C.S., Tu, T., Chen, K.C., Su, W., and Chang, T., BPSG Defects: BPO4 Crystals or Trapped Moisture?,Proc. XXIV Int. VLSI Multilevel Interconnection Conf., Santa Clara (USA), 1997, pp. 499–501.
Horn, W.F. and Hummel, F.A., Notes on the System B2O3-SiO2-P2O5:I. The BPO4-SiO2 Join,J. Soc. Glass. Technol., 1955, vol. 39, no. 187, p. 113T.
Englert, W.J. and Hummel, F.A., Notes on the System B2O3-SiO2-P2O5: II. Ternary System,J. Soc. Glass. Technol., 1955, vol. 39, no. 187, p. 121T.
Horn, W.F. and Hummel, F.A., Progress Report on the System BPO4-SiO2,Trans. J. Brit. Ceram. Soc., 1979, vol. 78, no. 4, p. 77.
Vasil’ev, V.Yu. and Dukhanova, T.G., Vapor Phase Deposition and Properties of Borophosphorosilicate Glass Layers,Khim. Fiz., 1992, vol. 11, no. 12, pp. 1699–1710.
Lu, W., Vassiliev, V.Y., Zheng, J.Z., and Chan, L., Comparison of Subatmospheric BPSG Films with Plasma Enhanced BPSG Films,Proc. III Int. Dielectric for ULSI Multilevel Interconnection Conf., Santa Clara (USA), 1997, pp. 219–222.
Vassiliev, V.Y., Lu, W, Zheng, J.Z., Wang, H.R., and Chan, L., The Formation and Growth of Surface Defects in Sub-Atmospheric Pressure BPSG Films,Proc. III Int. Dielectric for ULSI Multilevel Interconnection Conf., Santa Clara (USA), 1997, pp. 223–227.
Vassiliev, V.Y., Lu, W., Zheng, J.Z., and Lin, Y.S., The Removal and Suppression of Surface Defects in Sub-Atmospheric Pressure BPSG Films,Proc. XIV Int. VLSI Multilevel Interconnection Conf., Santa Clara (USA), 1997, p. 538.
Vassiliev, V.Y. and Zheng, J.Z., The Analysis of Optimized Dopant Concentration Range in Borophosphosilicate Glass Films for VLSI and ULSI,Proc.—Electrochem. Soc. (Pennington, NJ), 1997, vol. 97-25, pp. 1199–1206.
Tang, S.K., Mridha, S., Vassiliev, V.Y., Zheng, J.Z., and Chan, L., Characterization of Surface Defects in the Sub-Atmospheric Pressure-CVD Borophosphosilicate Glass Films on Silicon Wafer,Proc. VII Int. Symp. IC Technol., Singapore, 1997, pp. 601–604.
Tang, S.K., Vassiliev, V.Y., Mridha, S., and Chan, L., Investigation of Borophosphosilicate Glass Defects with the Atomic Force Microscope,Abstracts of Papers,XLIV Int. Symp. Am. Vac. Soc., San Jose (USA), 1997, p. 189.
Tang, S.K., Vassiliev, V.Y., Mridha, S., and Chan, L., Formation of the Solid State Defects in Chemically Vapor Deposited Borophosphosilicate Glass Films,Proc. IV Int. Dielectric for ULSI Multilevel Interconnection Conf., Santa Clara (USA), 1998, pp. 287–290.
Tang, S.K., Vassiliev, V.Y., Mridha, S., and Chan, L., Surface Defects of Borophosphosilicate Glass Dielectric Thin Films,Abstracts of Papers, Proc. I Asia-Pacific Surf, and Interface Anal Conf., Singapore, 1998, Abstr. no. Th-3–2.
Vassiliev, V.Y., Tang, S.K., Zheng, J.Z., and Liao, M., Application of Surface Charge Analysis Technique for Fast Non-Destructive Characterization of Sub-Atmospheric Pressure TEOS-Ozone BPSG Films,Proc. IV Int. Dielectric for ULSI Multilevel Interconnection Conf., Santa Clara (USA), 1998, pp. 253–260.
Vasil’ev, V.Yu., Properties of Vapor-Deposited Borophosphorosilicate Glass Layers Employed in Technology of Silicon Integrated Circuits,Fiz. Khim. Stekla, 2000, vol. 26, no. 1, pp. 116–129 [Glass Phys. Chem. (Engl. transl.), 2000, vol. 26, no. 1, pp. 83–92].
Tang, S.K., Vassiliev, V.Y., Mridha, S., and Chan, L., Investigation of Borophosphosilicate Glass Roughness and Planarization with the Atomic Force Microscope Technique,Abstracts of Papers, XXV Int. Conf. on Metallurgical Coatings and Thin Films (ICMCTF-98), San-Diego (USA), 1998, p. 144.
Ting, C.H., Inorganic Dielectrics, inHandbook of Multilevel Metallization for Integrated Circuits, Wilson, S.R., Tracy, C.J., and Freeman, J.L., Eds., Intern. Edition, Noyes, 1993, pp. 202–273.
Yoshimaru, M. and Matsuhashi, H., Moisture Resistance of Annealed Borophosphosilicate Glass Films for Very Large Scale Integrated Circuit Applications,J. Electrochem. Soc., 1996, vol. 143, no. 9, pp. 3032–3037.
Vassiliev, V.Y. and Zheng, J.Z., The Investigation on the Deposition Kinetics of Sub-Atmospheric Pressure Glass Films,Proc. VII Int. Symp. IC Technol., Singapore, 1997, pp. 522–525.
Vassiliev, V.Y., Zheng, J.Z., Liao, M., and Lin, Y.S., Step Coverage and Gap-Fill Properties of Sub-Atmospheric and Atmospheric Pressure TEOS-Ozone Borophosphosilicate Glass Films,Proc. IV Int. Dielectric for ULSI Multilevel Interconnection Conf., Santa Clara (USA), 1998, pp. 90–97.
Adams, A.C., Dielectric and Polysilicon Film Deposition, inVLSI Technology, Sze, S.M., Ed., Intern. Edition, New York: McGrow-Hill, 1988, pp. 233–271.
Nekrasov, V.A.,Osnovy obshchei khimii (Principles of General Chemistry), Moscow: Khimiya, 1973, vol. 2, pp. 9–12.
Boron Compounds, inEncyclopedia of Chemical Technology, New York: John Wiley and Sons, 1992, vol. 4, IV ed., pp. 360–413.
Boric Oxide, Boric Acid, and Borates, inUllman’s Encyclopedia of Industrial Chemistry, Weinheim: VCH, 1991, A4, V ed., pp. 263–280.
Phosphoric Acids and Phosphates, inUllman’s Encyclopedia of Industrial Chemistry, Weinheim: VCH, 1991, A19, V ed., pp. 465–500.
Kolesova, V.A., Borophosphate Glasses,Fiz. Khim. Stekla, 1981, vol. 7, no. 6, pp. 641–646.
Vassiliev, V.Y., Zheng, J.Z., and Lin, C., Quantitative Optimization of the Dopant Concentration Range in BPSG Films for ULSI Circuit Technology,Abstracts Proc. Electrochem. Soc., (Pennington, NJ), 1998, vol. 98–2, Abstr. no. 356.
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Vasil’ev, V.Y. On the nature of defects and mechanism of their formation in thin borophosphosilicate glass layers produced by vapor deposition upon fabrication of integrated circuits. Glass Phys Chem 26, 93–103 (2000). https://doi.org/10.1007/BF02731949
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DOI: https://doi.org/10.1007/BF02731949