2024-03-28T23:20:14Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:02002067
2023-01-16T05:08:06Z
320:321:322
Fabrication of heterojunction crystalline Si solar cells with BaSi2 thin films prepared by a two-step evaporation method
Nakagawa, Yoshihiko
Takahashi, Kazuma
Fujiwara, Michinobu
Hara, Kosuke O.
Gotoh, Kazuhiro
Kurokawa, Yasuyoshi
Itoh, Takashi
Suemasu, Takashi
Usami, Noritaka
open access
This is the Accepted Manuscript version of an article accepted for publication in [Japanese Journal of Applied Physics]. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at [https://doi.org/10.35848/1347-4065/ac23ec]
“This Accepted Manuscript is available for reuse under a CC BY-NC-ND licence after the 12 month embargo period provided that all the terms of the licence are adhered to”
We have fabricated p-type BaSi2 (p-BaSi2)/n-type crystalline Si (n-c-Si) heterojunction solar cells using thermal evaporation. To control the defect around the heterointerface, samples were fabricated by two methods using different current profiles during evaporation. The one-step method was designed to avoid supplying Ba-rich vapor, and the two-step method was designed to intentionally introduce Ba-rich vapor at the first step. Deep-level transient spectroscopy measurements revealed that defect densities in the n-c-Si side were almost the same for both samples. Open-circuit voltage (Voc) was successfully improved from 319 to 463 mV by the two-step method. This may be due to the increase of carrier density in p-BaSi2 prepared using a two-step method. As a result of optimization, the conversion efficiency of 6.23% was achieved by the heterojunction solar cells.
IOP publishing
2022-10-01
2021-10
eng
journal article
AM
http://hdl.handle.net/2237/0002002067
https://nagoya.repo.nii.ac.jp/records/2002067
https://doi.org/10.35848/1347-4065/ac23ec
0021-4922
Japanese Journal of Applied Physics
60
10
105503
https://nagoya.repo.nii.ac.jp/record/2002067/files/Manuscript_rev2_final-v3-NU-repo.pdf
application/pdf
799 KB
2022-10-01