材料科学
光电子学
量子点
有色的
量子点太阳电池
太阳能电池
聚合物太阳能电池
异质结
发光
硅
纳米技术
复合材料
作者
Conghui Jiang,Zhang Guo-hua,Zhiwei Hong,Jiangyu Chen,Ya Li,Xianrong Yuan,Yinyue Lin,Cao Yu,Tao Wang,Tao Song,Yusheng Wang,Baoquan Sun
标识
DOI:10.1002/adma.202208042
摘要
Colored solar panels, realized by depositing various reflection layers or structures, are emerging as power sources for building with visual aesthetics. However, these panels suffer from reduced photocurrent generation due to the less efficient light harvesting from visible light reflection and degraded power conversion efficiency (PCE). Here, color-patterned silicon heterojunction solar cells are achieved by incorporating luminescent quantum dots (QDs) with high quantum yields as light converters to realize an asthenic appearance with high PCE. It is found that large bandgap (blue) QD layers can convert UV light into visible light, which can notably alleviate the parasitic absorption by the front indium tin oxide and doped amorphous silicon. Additionally, a universal optical path model is proposed to understand the light transmission process, which is suitable for luminescent down-shift devices. In this study, solar cells with a PCE exceeding 23.5% are achieved using the combination of a blue QD layer and a top low refractive index anti-reflection layer. Based on our best knoledge,the obtained PCE is the highest for a color-patterned solar cell. The results suggest an enhanced strategy involving incorporation of luminescent QDs with an optical path design for high-performance photovoltaic panels with visual aesthetics.
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