title: Highly efficient CdS-quantum-dot-sensitized GaAs solar cells.
abstract: We demonstrate a hybrid design of traditional GaAs-based solar cell combined with colloidal CdS quantum dots. With anti-reflective feature at long wavelength and down-conversion at UV regime, the CdS quantum dot effectively enhance the overall power conversion efficiency by as high as 18.9% compared to traditional GaAs-based device. A more detailed study showed an increase of surface photoconductivity due to UV presence, and the fill factor of the solar cell can be improved accordingly.
authors.affiliation: Institute of Photonic System, College of Photonics, National Chiao-Tung University, No.301, Gaofa 3rd Rd., Guiren Dist., Tainan City 71150, Taiwan. chienchunglin@faculty.nctu.edu.tw
authors.forename: Chien-Chung
authors.initials: CC
authors.lastname: Lin
authors.forename: Hsin-Chu
authors.initials: HC
authors.lastname: Chen
authors.forename: Yu Lin
authors.initials: YL
authors.lastname: Tsai
authors.forename: Hau-Vei
authors.initials: HV
authors.lastname: Han
authors.forename: Huai-Shiang
authors.initials: HS
authors.lastname: Shih
authors.forename: Yi-An
authors.initials: YA
authors.lastname: Chang
authors.forename: Hao-Chung
authors.initials: HC
authors.lastname: Kuo
authors.forename: Peichen
authors.initials: P
authors.lastname: Yu