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

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

doi:10.3740/MRSK.2019.29.5.317

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2019 Vol.29, Issue 5 Preview Page Next Page

Performance Improvement of Flexible Thin Film Si Solar Cells using Graphite Substrate 그라파이트 기판을 이용한 유연 박막 실리콘 태양전지 특성 향상

May 2019. pp. 317-321

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Abstract

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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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 29
No :5
Pages :317-321
Received Date : 2019-03-27
Revised Date : 2019-04-21
Accepted Date : 2019-04-24
DOI :https://doi.org/10.3740/MRSK.2019.29.5.317

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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