Large near-infrared lateral photovoltaic effect in organic egg albumin/Si structure

Posted on 05.08.2022 - 21:42
Previously reported photoelectric devices mainly were limited to inorganic materials. Even though preparing high-performance photoelectric devices with organic biomaterials is an inevitable trend of commercialization, fabricating organic photoelectric devices based on naturally occurring materials with high sensitivity remains a grand challenge due to the high resistivity and few free electrons in these materials. Herein, high-performance photoelectric devices based on egg albumin (EA)/Si structure were proposed and a new perspective was provided for photodetection in naturally occurring materials by utilizing the surface state of p-Si to separate light-induced carriers effectively. The free electrons in metal atoms restrain the surface states, leading to the sensitivity of 5 mV/mm in metal/Si devices, while the sensitivity was promoted greatly to 357 mW/mm of the EA/Si device in the near-infrared region, which is intimately related to the little effect on the dangling bonds of the surface in EA and is among the most sensitive organic near-infrared photoelectronic device till date. This work opens new avenues to overcome the obstacle of the low sensitivity of organic photodetectors, indicating that the EA/Si device has great potential for future applications in flexible photovoltaic devices.


Zhao, Xinhui; wang, renzhi; Bao, Peng; niu, yiru; Zheng, Diyuan; Zhao, Zhuyikang; et al. (2022): Large near-infrared lateral photovoltaic effect in organic egg albumin/Si structure. Optica Publishing Group. Collection.
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Xinhui Zhao
renzhi wang
Peng Bao
yiru niu
Diyuan Zheng
Zhuyikang Zhao
Nan Su
Chenhua Hu
Su Hu
Ying Wang


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