title: Semitransparent polymer solar cells with simultaneously improved efficiency and color rendering index.
abstract: Herein, we demonstrate a kind of high performance semi-transparent polymer solar cell (STPSC) with a significantly improved color rendering index (CRI) and power conversion efficiency (PCE) by introducing one-dimensional photonic crystals (1DPCs), which are intentionally designed to strongly reflect the pristine weak absorbed light to flatten the concavo-convex transmittance spectrum of STPSCs. The transmitted light from the STPSC device with 4 pairs of 1DPCs under AM 1.5G illumination shows extraordinary color rendering capacities, which contribute an increased CRI from 79 to 91, combined with an enhanced PCE from 4.14% to 5.01% compared to devices without 1DPCs. The simultaneously improved optical and electrical performance suggests that STPSCs can provide a unique feature, which is suitable for building integrated photovoltaic applications.
authors.affiliation: State Key Laboratory on Integrated Optoelectronics, Jilin University, 2699 Qianjin Street, Changchun 130012, People's Republic of China. shenliang@jlu.edu.cn.
authors.forename: Wenjuan
authors.initials: W
authors.lastname: Yu
authors.forename: Xu
authors.initials: X
authors.lastname: Jia
authors.forename: Mengnan
authors.initials: M
authors.lastname: Yao
authors.forename: Linghui
authors.initials: L
authors.lastname: Zhu
authors.forename: Yongbing
authors.initials: Y
authors.lastname: Long
authors.forename: Liang
authors.initials: L
authors.lastname: Shen