Si-rich SiNx rear passivated c-Si solar cell with a novel antimony Local Back Surface Field formed by Laser Fired Contact
- Authors
- Balaji, N[Balaji, Nagarajan]; Song, K[Song, Kyuwan]; Choi, J[Choi, Jaewoo]; Park, C[Park, Cheolmin]; Yi, JS[Yi, Junsin]
- Issue Date
- Oct-2013
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- CURRENT APPLIED PHYSICS, v.13, no.8, pp.1826 - 1829
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- CURRENT APPLIED PHYSICS
- Volume
- 13
- Number
- 8
- Start Page
- 1826
- End Page
- 1829
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/59092
- DOI
- 10.1016/j.cap.2013.07.019
- ISSN
- 1567-1739
- Abstract
- Local Back Contact (LBC) crystalline silicon solar cell with novel antimony (Sb) Local Back Surface Field (LBSF) are reported. The Sb LBSF is formed at low temperature with a Laser Fired Contacts (LFC) process. To improve the solar cell parameters of Sb LBSF, the rear passivation layer with SiNx is optimized by varying the refractive index. The Si-rich SiNx with a refractive index (n) of 2.7 possesses high lifetime of 2 ms with reduced absorption at a longer wavelength. The increase in lifetime is analyzed with Si-H bond concentration by FTIR. A 100 nm thick Sb layer with low laser power of 44 mW resulted in a junction depth of 500 nm with a carrier concentration of 5 x 10(20) cm(-3). The improved rear passivation with Si-rich SiNx, the optimized Sb thickness yielded the best electrical results, with open circuit voltage (V-oc) of 643 mV and efficiency of 19.25%, compared to the reference cell with V-oc of 625 mV and efficiency of 18.20%. (C) 2013 Elsevier B. V. All rights reserved.
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Collections - Information and Communication Engineering > School of Electronic and Electrical Engineering > 1. Journal Articles
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