Evaluation of Spin-Coated Alumina Passivation Layer for Point-Contacted Rear Electrode Passivation of Silicon Solar Cells
Summary :
We fabricated silicon solar cells with spin-coated sol-gel alumina passivation layers on the rear side. Spin-coated alumina passivation films have moderate passivation quality and are inferior to atomic layer deposited passivation films. However, low-cost and low temperature process of the sol-gel deposition is still beneficial for the cells using commercially available Cz silicon wafers. Thus, we consider an applicability of the spin-coated alumina passivation layer for rear side passivation. Dependence of cell efficiency on contact spacing and contact diameter of a rear electrode was investigated by both experiments and numerical calculation. The experimental results indicated that conversion efficiency of the cell is enhanced from 9.1% to 11.1% by optimizing an aperture ratio and contact spacing of the rear passivation layers. Numerical calculation indicated that small contact diameter with low aperture ratio of a rear passivation layer is preferable to achieve good cell performance in our experimental condition. We confirmed the effectivity of the spin-coated alumina passivation films for rear surface passivation of the low-cost silicon solar cells.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E100-C No.1 pp.101-107
- Publication Date
- 2017/01/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.E100.C.101
- Type of Manuscript
- PAPER
- Category
- Semiconductor Materials and Devices
Authors
Ryosuke WATANABE
Seikei University
Tsubasa KOYAMA
Seikei University
Yoji SAITO
Seikei University
Keyword
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Ryosuke WATANABE, Tsubasa KOYAMA, Yoji SAITO, "Evaluation of Spin-Coated Alumina Passivation Layer for Point-Contacted Rear Electrode Passivation of Silicon Solar Cells" in IEICE TRANSACTIONS on Electronics,
vol. E100-C, no. 1, pp. 101-107, January 2017, doi: 10.1587/transele.E100.C.101.
Abstract: We fabricated silicon solar cells with spin-coated sol-gel alumina passivation layers on the rear side. Spin-coated alumina passivation films have moderate passivation quality and are inferior to atomic layer deposited passivation films. However, low-cost and low temperature process of the sol-gel deposition is still beneficial for the cells using commercially available Cz silicon wafers. Thus, we consider an applicability of the spin-coated alumina passivation layer for rear side passivation. Dependence of cell efficiency on contact spacing and contact diameter of a rear electrode was investigated by both experiments and numerical calculation. The experimental results indicated that conversion efficiency of the cell is enhanced from 9.1% to 11.1% by optimizing an aperture ratio and contact spacing of the rear passivation layers. Numerical calculation indicated that small contact diameter with low aperture ratio of a rear passivation layer is preferable to achieve good cell performance in our experimental condition. We confirmed the effectivity of the spin-coated alumina passivation films for rear surface passivation of the low-cost silicon solar cells.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E100.C.101/_p
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@ARTICLE{e100-c_1_101,
author={Ryosuke WATANABE, Tsubasa KOYAMA, Yoji SAITO, },
journal={IEICE TRANSACTIONS on Electronics},
title={Evaluation of Spin-Coated Alumina Passivation Layer for Point-Contacted Rear Electrode Passivation of Silicon Solar Cells},
year={2017},
volume={E100-C},
number={1},
pages={101-107},
abstract={We fabricated silicon solar cells with spin-coated sol-gel alumina passivation layers on the rear side. Spin-coated alumina passivation films have moderate passivation quality and are inferior to atomic layer deposited passivation films. However, low-cost and low temperature process of the sol-gel deposition is still beneficial for the cells using commercially available Cz silicon wafers. Thus, we consider an applicability of the spin-coated alumina passivation layer for rear side passivation. Dependence of cell efficiency on contact spacing and contact diameter of a rear electrode was investigated by both experiments and numerical calculation. The experimental results indicated that conversion efficiency of the cell is enhanced from 9.1% to 11.1% by optimizing an aperture ratio and contact spacing of the rear passivation layers. Numerical calculation indicated that small contact diameter with low aperture ratio of a rear passivation layer is preferable to achieve good cell performance in our experimental condition. We confirmed the effectivity of the spin-coated alumina passivation films for rear surface passivation of the low-cost silicon solar cells.},
keywords={},
doi={10.1587/transele.E100.C.101},
ISSN={1745-1353},
month={January},}
Copy
TY - JOUR
TI - Evaluation of Spin-Coated Alumina Passivation Layer for Point-Contacted Rear Electrode Passivation of Silicon Solar Cells
T2 - IEICE TRANSACTIONS on Electronics
SP - 101
EP - 107
AU - Ryosuke WATANABE
AU - Tsubasa KOYAMA
AU - Yoji SAITO
PY - 2017
DO - 10.1587/transele.E100.C.101
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E100-C
IS - 1
JA - IEICE TRANSACTIONS on Electronics
Y1 - January 2017
AB - We fabricated silicon solar cells with spin-coated sol-gel alumina passivation layers on the rear side. Spin-coated alumina passivation films have moderate passivation quality and are inferior to atomic layer deposited passivation films. However, low-cost and low temperature process of the sol-gel deposition is still beneficial for the cells using commercially available Cz silicon wafers. Thus, we consider an applicability of the spin-coated alumina passivation layer for rear side passivation. Dependence of cell efficiency on contact spacing and contact diameter of a rear electrode was investigated by both experiments and numerical calculation. The experimental results indicated that conversion efficiency of the cell is enhanced from 9.1% to 11.1% by optimizing an aperture ratio and contact spacing of the rear passivation layers. Numerical calculation indicated that small contact diameter with low aperture ratio of a rear passivation layer is preferable to achieve good cell performance in our experimental condition. We confirmed the effectivity of the spin-coated alumina passivation films for rear surface passivation of the low-cost silicon solar cells.
ER -
English
