期刊
APPLIED PHYSICS LETTERS
卷 115, 期 11, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5113749
关键词
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资金
- National Natural Science Foundation of China [61675143, 61705152, 61574098]
- China Postdoctoral Science Foundation [2018M640519]
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- 111 Project
An alternative strategy is proposed to achieve visible-blind ultraviolet (UV) monitoring. By introducing photochromic spiropyran (SP) molecules into the dielectric as the charge trapping layer, organic field-effect transistor (OFET) memories show a selective response to UV light and are inert to visible light. The photoisomerization of SP from the ring-close to ring-open states under UV illumination modifies its electronic structure, which facilitates electron trapping into the charge trapping layer and accordingly induces the memory effect. UV exposure recording can be realized by cumulative and nonvolatile electron trapping, enabling potential applications of OFET memories for UV monitoring in wearable electronics.
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