Circularly polarized photodetector based on chiral polythiophene block copolymer

HU Qi; XU Yun-hao; CHEN Si-yu; JIANG Long-long; QIU Long-zhen; WANG Xiao-hong

doi:10.37188/CJLCD.2023-0050

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Circularly polarized photodetector based on chiral polythiophene block copolymer

Material Physics | 更新时间：2023-05-09

- Circularly polarized photodetector based on chiral polythiophene block copolymer
- Chinese Journal of Liquid Crystals and Displays Vol. 38, Issue 5, Pages: 555-562(2023)
- 作者机构：
  
  1.合肥工业大学光电技术研究院特种显示技术国家工程实验室，测量理论与精密仪器安徽省重点实验室，安徽合肥 230009
- 作者简介：
- 基金信息：
  
  Natural Science Foundation of China(52273172;62274053);National Key Research and Development Program of China(2022YFE0198200);Major Science and Technology Project of Anhui Province(2021e03020007);Natural Science Foundation of Hefei(2022031;2022002)
- DOI：10.37188/CJLCD.2023-0050
  CLC：
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HU Qi, XU Yun-hao, CHEN Si-yu, et al. Circularly polarized photodetector based on chiral polythiophene block copolymer. [J]. Chinese Journal of Liquid Crystals and Displays 38(5):555-562(2023)
DOI：

HU Qi, XU Yun-hao, CHEN Si-yu, et al. Circularly polarized photodetector based on chiral polythiophene block copolymer. [J]. Chinese Journal of Liquid Crystals and Displays 38(5):555-562(2023) DOI： 10.37188/CJLCD.2023-0050.

摘要

手性有机半导体由于具有光谱可调和易于加工的优点，在小型化和集成化的圆偏振光检测中具有广泛的应用前景。本文通过控制手性异腈（PPI）的加入合成了聚（3-己基噻吩-嵌段-聚（苯基异氰））（P3HT,80,和P3HT,80,-PPI（L）,30,）。实验结果证明了两种半导体聚合物被成功合成。测试了两种半导体聚合物的光学特性，发现嵌段聚合物P3HT,80,-PPI（L）,30,具有手性光学活性。制备了基于有机场效应晶体管的圆偏振光探测器，研究器件对于450 nm的圆偏振光旋向的区分性能。实验结果表明，手性异腈（PPI）的加入虽然降低了P3HT,80,的电学性能，但引入了手性光学活性，使基于P3HT,80,-PPI（L）,30,制备的器件能够区分圆偏振光的旋向，并且在450 nm的光电流不对称因子,g,res,达到了0.083。

Abstract

Chiral organic semiconductors are promising for miniaturized and integrated circularly polarized light detection due to their spectral tunability and easy processing. In this paper， poly（3-hexylthiophene-block-poly（phenylisocyanide））（P3HT,80, and P3HT,80,-PPI（L）,30,） were synthesized by controlled incorporation of chiral isonitrile （PPI）. The experimental results demonstrated that two semiconductor polymers were successfully synthesized. Furthermore， the optical properties of the two semiconductor polymers were tested and the block polymer P3HT,80,-PPI（L）,30, was found to have chiral optical activity. A circularly polarized photodetector based on an organic field effect transistor was prepared to study the performance of the device for differentiating the spin direction of circularly polarized light at 450 nm. The experimental results indicated that the addition of chiral isonitrile （PPI） degraded the electrical properties of P3HT,80, but introduced chiral optical activity， enabling the devices based on P3HT,80,-PPI（L）,30, to distinguish the spin direction of circularly polarized light， and the photocurrent asymmetry factor gres at 450 nm reached 0.083.

关键词

手性有机半导体嵌段共聚物手性光学活性有机薄膜晶体管圆偏振光探测器

Keywords

chiral organic semiconductorsblock copolymerschiral optical activityorganic thin-film transistorscircularly polarized photodetectors

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