Electrical Double-Layer Transistors Comprising Block Copolymer Electrolytes for Low-Power-Consumption Photodetectors

作     者：Lin, Hung-An Weng, Yi-Hsun Mulia, Tiffany Liu, Cheng-Liang Lin, Yan-Cheng Yu, Yang-Yen Chen, Wen-Chang 

作者机构：Department of Materials Engineering Ming Chi University of Technology New Taipei City24301 Taiwan Department of Chemical Engineering National Taiwan University Taipei10617 Taiwan Advanced Research Center for Green Materials Science and Technology National Taiwan University Taipei10617 Taiwan Department of Materials Science and Engineering National Taiwan University Taipei10617 Taiwan Department of Chemical Engineering National Cheng Kung University Tainan70101 Taiwan 

出 版 物：《ACS Applied Materials and Interfaces》 (ACS Appl. Mater. Interfaces)

年 卷 期：2024年第16卷第19期

页      面：25042-25052页

核心收录：

学科分类：0710[理学-生物学] 0808[工学-电气工程] 080802[工学-电力系统及其自动化] 1001[医学-基础医学(可授医学、理学学位)] 0809[工学-电子科学与技术（可授工学、理学学位）] 0817[工学-化学工程与技术] 08[工学] 070203[理学-原子与分子物理] 100102[医学-免疫学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：The authors acknowledge the financial support from the Ministry of Education\u2019s Higher Education Sprout Project under the Featured Area Research Center Program (112L9006). Y.-C.L. also thanks the financial support from the National Science and Technology Council in Taiwan (NSTC 111-2222-E-006-020-MY2) and the Higher Education Sprout Project  Ministry of Education to the Headquarters of University Advancement at National Cheng Kung University (NCKU). The authors acknowledge the National Synchrotron Radiation Research Center (NSRRC)  Taiwan  for facilitating the GIXD experiments in BL13A1 and BL23A1. The authors also thank S.-J. Ji at the NTU Instrumentation Center for assistance in SEM experiments which are supported by the NSTC  Taiwan 

主　　题：Polyethylene oxides 

摘      要：Electrical double-layer transistors (EDLTs) have received extensive research attention owing to their exciting advantages of low working voltage, high biocompatibility, and sensitive interfacial properties in ultrasensitive portable sensing applications. Therefore, it is of great interest to reduce photodetectors’ operating voltage and power consumption by utilizing photo-EDLT. In this study, a series of block copolymers (BCPs) of poly(4-vinylpyridine)-block-poly(ethylene oxide) (P4VP-b-PEO) with different compositions were applied to formulate polyelectrolyte with indigo carmine salt in EDLT. Accordingly, PEO conduces ion conduction in the BCP electrolyte and enhances the carrier transport capability in the semiconducting channel;P4VP boosts the photocurrent by providing charge-trapping sites during light illumination. In addition, the severe aggregation of PEO is mitigated by forming a BCP structure with P4VP, enhancing the stability and photoresponse of the photo-EDLT. By optimizing the BCP composition, EDLT comprising P4VP16k-b-PEO5k and indigo carmine provides the highest specific detectivity of 2.1 × 107 Jones, along with ultralow power consumptions of 0.59 nW under 450 nm light illumination and 0.32 pW under dark state. The results indicate that photo-EDLT comprising the BCP electrolyte is a practical approach to reducing phototransistors’ operating voltage and power consumption. © 2024 The Authors. Published by American Chemical Society