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Small pyramidal textured ultrathin crystalline silicon solar cells with double-layer passivation

Tan, Xinyu; Yan, Wensheng; Tu, Yiteng; Deng, Can

Abstract (englisch):
Ultrathin crystalline silicon solar cells are a promising technology roadmap to achieve more cost effectiveness. However, experimental reports on ultrathin crystalline silicon cells with thickness less than 20 µm are rare. Here, we experimentally fabricate and investigate ultrathin monocrystalline silicon solar cells consisting of 16 µm-silicon base thickness and low-cost front random pyramidal texture with the feature size of 1-2 µm. The normalized light absorption is calculated to explain the measured external quantum efficiency. The achieved efficiency is 15.1% for the single-layer passivated textured solar cell. In addition, via double-layer passivation of Al2O3/SiNx, the efficiency is further increased to 16.4% for the best textured cell, which significantly improves the absolute efficiency with Δη = 1.3%.

Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator DOI: 10.1364/OE.25.014725
ISSN: 1094-4087
KITopen ID: 1000071764
HGF-Programm 43.23.04; LK 01
Erschienen in Optics express
Band 25
Heft 13
Seiten 14725
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