Tailoring solar energy spectrum for efficient organic/inorganic hybrid solar cells by up-conversion luminescence nanophosphors
作者： Dongyu Li , Weifu Sun , Lexi Shao , Shuying Wu , Zhen Huang
DOI: 10.1016/J.ELECTACTA.2015.09.023
关键词:
摘要: Abstract Solar light harvesting ability is one of the key properties in organic/inorganic solar cells. One most popular organic materials used poly(3-hexylthiophene) (P3HT), which can make use spectrum range 400-600 nm, however, this polymer incapable utilizing low energy photons. Herein, we incorporate erbium ion decorated gadolinium oxymolybdate (GMO:Er) nanophosphors (NPs) into mesoporous acceptor film (TiO 2 ) an attempt to enhance harvest. The nanophosphor convert near-infrared visible region (near 550 nm), be recaptured by P3HT. results show that up-conversion proceeds via two-photon mechanism. It found after incorporation GMO:Er NPs TiO at 5 wt%, charge transfer rate was enhanced from 2.79 5.83 × 10 9 s −1 . device performance cells based on demonstrates a more than 30% improvement compared their neat /P3HT analogue and such enhancement ascribed broader harvest together with faster photoexcited transfer. This platform readily implemented introducing demanding conversion phosphors allows for development optoelectronic applications tailored properties.
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