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The performance of the ZnO film that is an indispensable part of pin-type Si-based thin-film solar cells, plays a crucial role in high-efficiency thin-film solar cells and also forms a significant part in photovoltaic research and development. In this paper, low resistivity and wide broadband spectrum transmittance vanadium (V) doped ZnO (VZO) films are successfully fabricated on Corning XG substrates at various substrate temperatures (STs). The properties of VZO films are investigated by the radio-frequency magnetron sputtering technique and plane wave pseudo-potential method based on the density-functional theory. The experimental results demonstrate that all the VZO flms have (002) preferred orientation with the c-axis perpendicular to the substrate, and the crystalline quality is found to increase with the substrate temperature (ST) rising up to 280 ℃ and decrease when the ST increases further. The optimal VZO film is achieved at 280 ℃ with a resistivity of 3.810-3 cm and an average transmittance of more than 85% in a range of 500-2000 nm. The theoretical result shows that after incorporation of V the Fermi level goes through the conduction band, showing a typical n-type metallic characteristic. The carriers originate from the orbits of V 3d and O 2p. The calculated lattice constants and mobility for VZO film are in agreement well with the experimental results. The consistency of the theoretical results with the experimental results shows that the VZO thin film has a great potential application as a front contact in high-efficiency thin film solar cells.
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Keywords:
- VZO film /
- magnetron sputtering /
- first principle calculations /
- solar cells
[1] Minami T 2005 Semicond. Sci. Technol. 20 S35
[2] Ding L, Fanni L, Messerschmidt D, Zabihzadeh S, Morales M M, Nicolay S, Ballif C 2014 Sol. Energy Mater. Sol. Cells 128 378
[3] Meier M, Paetzold U W, Prmpers M, Merdzhanova T, Carius R, Gordijn A 2014 Prog. Photovolt: Res. Appl. 22 1226
[4] Sang B S, Kushiya K, Okumura D, Yamase O 2001 Sol. Energy Mater. Sol. Cells 67 237
[5] Park H K, Heo J 2014 Appl. Surf. Sci. 309 133
[6] Park S M, Ikegami T, Ebihara K 2006 Thin Solid Films 513 90
[7] Huang Q, Zhang D K, Liu B F, Bai L S, Ni J, Zhao Y, Zhang X D 2015 Sol. Energy Mater. Sol. Cells 136 11
[8] Agashe C, Kluth O, Schpe G, Siekmann H, Hpkes J, Rech B 2003 Thin Solid Films 442 167
[9] Ma Q B, Ye Z Z, He H P, Luo Y, Zhu L P, Huang J Y, Zhang Y Z, Zhao B H 2008 Chem. Phys. Chem. 9 529
[10] Meng Y, Yang X L, Chen H X, Shen J, Jiang Y M, Zhang Z J, Hua Z Y 2001 Thin Solid Films 394 219
[11] Gupta R K, Ghosh K, Mishra S R, Kahol P K 2008 Appl. Surf. Sci. 254 1661
[12] Zhang C, Chen X L, Wang F, Yan C B, Huang Q, Zhao Y, Zhang X D, Geng X H 2012 Acta Phys. Sin. 61 238101 (in Chinese) [张翅, 陈新亮, 王斐, 闫聪博, 黄茜, 赵颖, 张晓丹, 耿新华 2012 61 238101]
[13] Wu M Y, Yu S H, Chen G H, He L, Yang L, Zhang W F 2015 Appl. Surf. Sci. 324 791
[14] Cao F, Wand Y D, Liu D L, Yin J Z, Guo B J, Li L, An Y P 2009 Chin. Phys. Lett. 26 034210
[15] Qadri S B, Kim H, Horwitz J S, Chrisey D B 2000 J. Appl. Phys. 88 6564
[16] Ngoma B D, Mpahane T, Manyala N, Nemraoui O, Buttner U, Kana J B, Fasasi A Y, Maaza M, Bey A C 2009 Appl. Surf. Sci. 255 4153
[17] Cao M M, Zhao X R, Duan L B, Liu J R, Guan M M, Guo W R 2014 Chin. Phys. B 23 047805
[18] Schlenker E, Bakina A, Postelsa B, Mofor A C, Kreyea M, Ronning C, Sievers S, Albrecht M, Siegner U, Kling R, Waag A 2007 Superlattices Microstruct. 42 236
[19] Wang Y F, Huang Q, Song Q G, Liu Y, Wei C C, Zhao Y, Zhang X D 2012 Acta Phys. Sin. 61 137801 (in Chinese) [王延峰, 黄茜, 宋庆功, 刘阳, 魏长春, 赵颖, 张晓丹 2012 61 137801]
[20] Wang Y F, Zhang X D, Huang Q, Yang F, Meng X D, Song Q G, Zhao Y 2013 Acta Phys. Sin. 62 247802 (in Chinese) [王延峰, 张晓丹, 黄茜, 杨富, 孟旭东, 宋庆功, 赵颖 2013 62 247802]
[21] Segall M D, Lindan P J D, Probert M J, Pickard C J, Hasnip P J, Clark S J, Payne M C 2002 J. Phys.: Condens. Matter 14 2717
[22] Perdew J P, Burke K, Ernzerhof M 1996 Phys. Rev. Lett. 77 3865
[23] Vanderbilt D 1990 Phys. Rev. B 41 7892
[24] Wang Q B, Zhou C, Wu J, L T 2013 Opt. Commun. 297 79
[25] Sheetz R M, Ponomareva I, Richter E, Andriotis A N, Menon M 2009 Phys. Rev. B 80 195314
[26] Wang Y F, Zhang X D, Huang Q, Yang F, Liang J H, Zhang D K, Zhao Y 2014 Vacuum 107 6
[27] zgr , Alivov Y I, Liu C, Teke A, Reshchikov M A, Doğan S, Avrutin V, Cho S J, Morko H 2005 J. Appl. Phys. 98 041301
[28] Ellmer K 2000 J. Phys. D: Appl. Phys. 33 R17
[29] Singh S, Srinivasa R S, Major S S 2007 Thin Solid Films 515 8718
[30] Li X Y, Li H J, Wang Z J, Xia H, Xiong Z Y, Wang J X, Yang B C 2009 Opt. Commun. 282 247
[31] Miyata T, Suzuki S, Ishii M, Minami T 2002 Thin Solid Films 411 76
[32] Pei Z L, Sun C, Tan M H, Xiao J Q, Guan D H, Huang R F, Wen L S 2001 J. Appl. Phys. 90 3432
[33] Desgreniers S 1998 Phys. Rev. B: Condens. Matter 58 14102
[34] Wang Y F, Huang H Y, Meng X D, Yang F, Nan J Y, Song Q G, Huang Q, Zhao Y, Zhang X D 2015 J. Alloys Compd. 636 102
[35] Burstein E 1954 Phys. Rev. 93 632
[36] Moss T S 1954 Proc. Phys. Soc. London, Sect. B 67 775
[37] Yang P, Gao X H 1981 Journal of Shanxi University (Natural Science Edition) 4 40 (in Chinese) [杨频, 高孝恢 1981 山西大学学报(自然科学版) 4 40]
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[1] Minami T 2005 Semicond. Sci. Technol. 20 S35
[2] Ding L, Fanni L, Messerschmidt D, Zabihzadeh S, Morales M M, Nicolay S, Ballif C 2014 Sol. Energy Mater. Sol. Cells 128 378
[3] Meier M, Paetzold U W, Prmpers M, Merdzhanova T, Carius R, Gordijn A 2014 Prog. Photovolt: Res. Appl. 22 1226
[4] Sang B S, Kushiya K, Okumura D, Yamase O 2001 Sol. Energy Mater. Sol. Cells 67 237
[5] Park H K, Heo J 2014 Appl. Surf. Sci. 309 133
[6] Park S M, Ikegami T, Ebihara K 2006 Thin Solid Films 513 90
[7] Huang Q, Zhang D K, Liu B F, Bai L S, Ni J, Zhao Y, Zhang X D 2015 Sol. Energy Mater. Sol. Cells 136 11
[8] Agashe C, Kluth O, Schpe G, Siekmann H, Hpkes J, Rech B 2003 Thin Solid Films 442 167
[9] Ma Q B, Ye Z Z, He H P, Luo Y, Zhu L P, Huang J Y, Zhang Y Z, Zhao B H 2008 Chem. Phys. Chem. 9 529
[10] Meng Y, Yang X L, Chen H X, Shen J, Jiang Y M, Zhang Z J, Hua Z Y 2001 Thin Solid Films 394 219
[11] Gupta R K, Ghosh K, Mishra S R, Kahol P K 2008 Appl. Surf. Sci. 254 1661
[12] Zhang C, Chen X L, Wang F, Yan C B, Huang Q, Zhao Y, Zhang X D, Geng X H 2012 Acta Phys. Sin. 61 238101 (in Chinese) [张翅, 陈新亮, 王斐, 闫聪博, 黄茜, 赵颖, 张晓丹, 耿新华 2012 61 238101]
[13] Wu M Y, Yu S H, Chen G H, He L, Yang L, Zhang W F 2015 Appl. Surf. Sci. 324 791
[14] Cao F, Wand Y D, Liu D L, Yin J Z, Guo B J, Li L, An Y P 2009 Chin. Phys. Lett. 26 034210
[15] Qadri S B, Kim H, Horwitz J S, Chrisey D B 2000 J. Appl. Phys. 88 6564
[16] Ngoma B D, Mpahane T, Manyala N, Nemraoui O, Buttner U, Kana J B, Fasasi A Y, Maaza M, Bey A C 2009 Appl. Surf. Sci. 255 4153
[17] Cao M M, Zhao X R, Duan L B, Liu J R, Guan M M, Guo W R 2014 Chin. Phys. B 23 047805
[18] Schlenker E, Bakina A, Postelsa B, Mofor A C, Kreyea M, Ronning C, Sievers S, Albrecht M, Siegner U, Kling R, Waag A 2007 Superlattices Microstruct. 42 236
[19] Wang Y F, Huang Q, Song Q G, Liu Y, Wei C C, Zhao Y, Zhang X D 2012 Acta Phys. Sin. 61 137801 (in Chinese) [王延峰, 黄茜, 宋庆功, 刘阳, 魏长春, 赵颖, 张晓丹 2012 61 137801]
[20] Wang Y F, Zhang X D, Huang Q, Yang F, Meng X D, Song Q G, Zhao Y 2013 Acta Phys. Sin. 62 247802 (in Chinese) [王延峰, 张晓丹, 黄茜, 杨富, 孟旭东, 宋庆功, 赵颖 2013 62 247802]
[21] Segall M D, Lindan P J D, Probert M J, Pickard C J, Hasnip P J, Clark S J, Payne M C 2002 J. Phys.: Condens. Matter 14 2717
[22] Perdew J P, Burke K, Ernzerhof M 1996 Phys. Rev. Lett. 77 3865
[23] Vanderbilt D 1990 Phys. Rev. B 41 7892
[24] Wang Q B, Zhou C, Wu J, L T 2013 Opt. Commun. 297 79
[25] Sheetz R M, Ponomareva I, Richter E, Andriotis A N, Menon M 2009 Phys. Rev. B 80 195314
[26] Wang Y F, Zhang X D, Huang Q, Yang F, Liang J H, Zhang D K, Zhao Y 2014 Vacuum 107 6
[27] zgr , Alivov Y I, Liu C, Teke A, Reshchikov M A, Doğan S, Avrutin V, Cho S J, Morko H 2005 J. Appl. Phys. 98 041301
[28] Ellmer K 2000 J. Phys. D: Appl. Phys. 33 R17
[29] Singh S, Srinivasa R S, Major S S 2007 Thin Solid Films 515 8718
[30] Li X Y, Li H J, Wang Z J, Xia H, Xiong Z Y, Wang J X, Yang B C 2009 Opt. Commun. 282 247
[31] Miyata T, Suzuki S, Ishii M, Minami T 2002 Thin Solid Films 411 76
[32] Pei Z L, Sun C, Tan M H, Xiao J Q, Guan D H, Huang R F, Wen L S 2001 J. Appl. Phys. 90 3432
[33] Desgreniers S 1998 Phys. Rev. B: Condens. Matter 58 14102
[34] Wang Y F, Huang H Y, Meng X D, Yang F, Nan J Y, Song Q G, Huang Q, Zhao Y, Zhang X D 2015 J. Alloys Compd. 636 102
[35] Burstein E 1954 Phys. Rev. 93 632
[36] Moss T S 1954 Proc. Phys. Soc. London, Sect. B 67 775
[37] Yang P, Gao X H 1981 Journal of Shanxi University (Natural Science Edition) 4 40 (in Chinese) [杨频, 高孝恢 1981 山西大学学报(自然科学版) 4 40]
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