[17a-W9_325-1~6] 16.3 Bulk, thin-film and other silicon-based solar cells

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)

[17a-W9_325-4] Antirefrection effects of cover material for unencapsulated crystalline Si photovoltaic modules

〇Towa Kameda¹, Yuta Saito¹, Yo Yamakawa¹, Taichi Uemura², Yasuaki Ishikawa², Keisuke Ohdaira³, Kazuhiro Gotoh^1,4, Atsushi Masuda^1,4 (1.Grad. Sch. Sci. Tech., Niigata Univ., 2.Aoyama Gakuin Univ., 3.JAIST, 4.IRCNT, Niigata Univ.)

Keywords:

c-Si PV module,Unencapsulant module

Unencapsulated crystalline Si photovoltaic modules suffer from reflection losses caused by the air gap between the cover material and the solar cell. In this study, we applied a MgF₂ antireflection coating and moth-eye structures to polycarbonate covers and investigated their effectiveness for such modules. Optical transmittance, short-circuit current density, and external quantum efficiency measurements showed that the combined structure effectively reduced reflection losses, achieving 97% of the short-circuit current density compared with modules without a cover.