Title :
Broadband Anti-Reflective Structure with Mesoporous Silica of Low Refractive Index in Si Solar Panels
Author :
Shieh, Jia-Min ; Liu, Li-Jung ; Shiao, Jui-Chung ; Wang, Chao-Kei ; Wu, Shich-Chuan ; Yu, Wen-Chien ; Kuo, Hao-Chung ; Liu, Shia Chia ; Lai, Yi-Fan ; Hsiang, Kuo-Chen ; Chen, Yen-Chang
Abstract :
Mesoporus silica dielectrics, which revealed low refractive index (n~1.26), were introduced together with Si3N4 layers to be double-layer-based graded-refractive-index anti- reflectors for silicon solar-cells. Enhanced solar-light transmission increased conversion efficiency of Si solar panels by 4%. The degradation in photovoltaic efficiency of solar panels that were covered with Si3N4/MS anti-reflectors was as small as 0.54 % after 60 hours of irradiation. MS films revealed wide band-gap of 6.4 eV and, therefore, negligible absorption in the solar spectrum, in response to highly stable photovoltaic efficiency during long-term irradiation.
Keywords :
antireflection coatings; dielectric materials; elemental semiconductors; mesoporous materials; refractive index; silicon; silicon compounds; solar cells; Si; SiO2-Si3N4; broadband antireflective structure; conversion efficiency; double-layer-based graded-refractive-index antireflectors; long-term irradiation; mesoporus silica dielectrics; photovoltaic efficiency; refractive index; silicon solar-cells; solar panels; solar-light transmission; time 60 h; wide band-gap; Absorption; Dielectric materials; Materials reliability; Mesoporous materials; Optical films; Optical refraction; Photovoltaic cells; Reflectivity; Refractive index; Silicon compounds;
Conference_Titel :
Nanotechnology, 2008. NANO '08. 8th IEEE Conference on
Conference_Location :
Arlington, Texas
Print_ISBN :
978-1-4244-2103-9
Electronic_ISBN :
978-1-4244-2104-6
DOI :
10.1109/NANO.2008.26
