Enhance current density and power conversion efficiency in solar cells by using luminescent downshifting phosphors
- Resource Type
- Conference
- Authors
- Han, Hau-Vei; Lin, Chien-Chung; Lin, Wein-Yi; Tsai, Yu-Lin; Shen, Tien-Lin; Kuo, Hao-Chung; Yu, Peichen
- Source
- 2014 IEEE 40th Photovoltaic Specialist Conference (PVSC) Photovoltaic Specialist Conference (PVSC), 2014 IEEE 40th. :0022-0024 Jun, 2014
- Subject
- Components, Circuits, Devices and Systems
Phosphors
Photonics
Photovoltaic cells
Fabrication
Photovoltaic systems
Fluorescence
GaAs solar cell
downshifting
anti-reflection
phosphor
- Language
- ISSN
- 0160-8371
The silicate phosphor on the surface of GaAs solar cell are demonstrated to have promising potential for efficient solar spectrum utilization. The phosphor is a common utilized material in white light LED package, so the cost of phosphor is relatively low and the stability is good. The solar cells showed an enhancement of 22.8% in short-circuit current density and approximately 25.3% in power conversion efficiency when coated with silicate phosphor particles. The current analyses and experiments conclude that the phosphor particles not only play as luminescent downshifting centers in the ultraviolet region but also serve as an anti-reflection coating for enhancing the light absorption in the overall spectral response of external quantum efficiency.