TY - JOUR
T1 - Impact of heterointerface properties of crystalline germanium heterojunction solar cells
AU - Nakano, Shinya
AU - Shiratani, Masaharu
N1 - Funding Information:
The authors thank Assistant Professor Tetsuya Kaneko at Tokai University and Professor Michio Kondo at AIST for their insightful discussions. This work is supported by the New Energy and Industrial Technology Development Organization (NEDO), Japan.
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/9/1
Y1 - 2019/9/1
N2 - We have previously reported that phosphine (PH3) surface treatment of a p-type crystalline germanium (c-Ge) substrate improves the c-Ge heterojunction solar cell performance. In this study, the effects of the heterointerface properties of the c-Ge heterojunction solar cell were investigated. We found that the deposition temperature of the heterojunction layer and O2 surface treatment before the PH3 surface treatment influence the interface phase structure and band structure. Consequently, a conversion efficiency of 7.61% with a high open-circuit voltage of 0.270 V was obtained.
AB - We have previously reported that phosphine (PH3) surface treatment of a p-type crystalline germanium (c-Ge) substrate improves the c-Ge heterojunction solar cell performance. In this study, the effects of the heterointerface properties of the c-Ge heterojunction solar cell were investigated. We found that the deposition temperature of the heterojunction layer and O2 surface treatment before the PH3 surface treatment influence the interface phase structure and band structure. Consequently, a conversion efficiency of 7.61% with a high open-circuit voltage of 0.270 V was obtained.
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U2 - 10.1016/j.tsf.2019.06.028
DO - 10.1016/j.tsf.2019.06.028
M3 - Article
AN - SCOPUS:85067860347
SN - 0040-6090
VL - 685
SP - 225
EP - 233
JO - Thin Solid Films
JF - Thin Solid Films
ER -