그라파이트 기판을 이용한 유연 박막 실리콘 태양전지 특성 향상

임경열; 조준식; Gyeong-yeol Lim; Jun-sik Cho; Hyo Sik Chang

Korean Journal of Materials Research, Vol.29, No.5, 317-321, May, 2019

DOI10.3740/MRSK.2019.29.5.317 Export Citation

그라파이트 기판을 이용한 유연 박막 실리콘 태양전지 특성 향상

Performance Improvement of Flexible Thin Film Si Solar Cells using Graphite Substrate

임경열, 조준식¹, ^†

충남대학교 에너지과학기술대학원
¹한국에너지기술연구원 태양광연구실

Gyeong-yeol Lim, Jun-sik Cho¹, and Hyo Sik Chang^†

Graduate School of Energy Science and Technology, Chungnam National University, Daejeon 34134, Republic of Korea
¹Photovoltaic Laboratory, Korea Institute of Energy Research, Daejeon, 34129, Republic of Korea

E-mail:

We investigated the characteristics of nano crystalline silicon(nc-Si) thin-film solar cells on graphite substrates. Amorphous silicon(a-Si) thin-film solar cells on graphite plates show low conversion efficiency due to high surface roughness, and many recombination by dangling bonds. In previous studies, we deposited barrier films by plasma enhanced chemical vapor deposition(PECVD) on graphite plate to reduce surface roughness and achieved ~7.8 % cell efficiency. In this study, we fabricated nc-Si thin film solar cell on graphite in order to increase the efficiency of solar cells. We achieved 8.45 % efficiency on graphite plate and applied this to nc-Si on graphite sheet for flexible solar cell applications. The characterization of the cell is performed with external quantum efficiency(EQE) and current density-voltage measurements(J-V). As a result, we obtain ~8.42 % cell efficiency in a flexible solar cell fabricated on a graphite sheet, which performance is similar to that of cells fabricated on graphite plates.

Keywords:graphite;plasma-enhanced chemical vapor deposition;thin film silicon solar cell;flexible solar cell;nanocrystalline silicon

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Cho JS, Jang E, Lim D, Ahn S, Yoo J, Park JH, Kim K, Yun JH, Choi B, Sol. Energy, 159, 444 (2018)
Filonovich SA, Alpuim P, Rebouta L, Bouree JE, Soro YM, J. Non-Cryst. Solids, 354, 2376 (2008)
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[1] Frackowiak E, Beguin F, Carbon, 39, 937 (2001)

[2] Wang J, Kaskel S, J. Mater. Chem., 22, 23710 (2012)

[3] Simon P, Gogotsi Y, Accounts Chem. Res., 46, 1094 (2012)

[4] Bhopal MF, Rehman A, Lee DW, Lee SH, J. Korean Phys. Soc., 66, 730 (2015)

[5] Shi Z, Jayatissa A, Materials, 11, 36 (2018)

[6] Czerniak-Reczulska M, Niedzielska A, Jedrzejczak A, Adv. Mater. Sci., 15, 67 (2015)

[7] Li XM, Lv Z, Zhu HW, Adv. Mater., 27(42), 6549 (2015)

[8] Xu W, Choi S, Allen MG, in Proc. 23rd IEEE Int. Conf. MEMS, p. 1187 (Hong Kong, 2010).

[9] Cho YJ, Lee DW, Cho JS, Chang HS, J. Korean Inst. Electr. Electron. Mater. Eng., 29, 505 (2016)

[10] Smith ZE, Wagner S, Phys. Rev. Lett., 59, 688 (1987)

[11] Boehme C, Friedrich F, Ehara T, Lips K, Thin Solid Films, 487(1-2), 132 (2005)

[12] Fehr M, Schnegg A, Teutloff C, Bittl R, Astakhov O, Finger F, Phys. Status Solidi A-Appl. Res., 207, 552 (2010)

[13] Wyrsch N, Droz C, Feitknecht L, Torres P, Vallat-Sauvain E, Bailat J, Shah A, J. Non-Cryst. Solids, 299, 390 (2002)

[14] Yuan Y, Zhao W, Ma J, Yang Z, Li W, Zhang K, Surf. Coat. Technol., 320, 362 (2017)

[15] Cho JS, Jang E, Lim D, Ahn S, Yoo J, Park JH, Kim K, Yun JH, Choi B, Sol. Energy, 159, 444 (2018)

[16] Filonovich SA, Alpuim P, Rebouta L, Bouree JE, Soro YM, J. Non-Cryst. Solids, 354, 2376 (2008)

[17] Li Z, Zhang X, Han G, Phys. Status Solidi A-Appl. Res., 207, 144 (2010)

[18] Lee CH, Sazonov A, Nathan A, Appl. Phys. Lett., 86, 222106 (2005)