期刊
NANO ENERGY
卷 85, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2021.105937
关键词
Aesthetic design; Refractive index; Heterojunctions; Photovoltaics; Colored solar cells
类别
资金
- Yunnan University Action Plan of Serve the Yunnan Province [2016MS15]
- Yunling Scholars Fund of Yunnan Province Ten Thousand Talents Program [KC194317]
- National Natural Science Foundation of China [11774304]
- Yunnan Local University Joint Special Funds for Basic Research [2017FH001-007]
The study demonstrates that PV panels can be colored by modifying the optical refractive index of the PEDOT:PSS films, with proper doping material selection being crucial. By utilizing polymer/Si heterojunction test cells, researchers successfully developed silicon heterojunction solar cells with colors across the entire visible spectrum while maintaining high power conversion efficiency.
Photovoltaic (PV) panels with vivid colors provide an additional dimension for developing new applications such as aesthetically appealing solar buildings and mobile products. Thus, rendering PV panel colorful at low cost while keeping high power conversion efficiency (PCE) is of great interest to the community. Based on polymer/Si heterojunction test cells, here we report that color rendering can be made by modifying the optical refractive index of the PEDOT:PSS films. The key to achieving the desired refractive index of the PEDOT:PSS layer for a specific color is to select proper doping material. Guided by theoretical modeling analysis, we have developed 1 x 1 cm(2) silicon heterojunction solar cells with colors across the entire visible spectrum while simultaneously achieving a competitive PCE of 13.2%. As a solution-based process is used to fabricate the Si heterojunction cells, the method reported here can be readily scaled up using mature industrial tools such as inkjet printers.
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