Vacuum-free lamination via controlled polymer adhesion for selective photogeneration and photodetection  

作　　者：Min Soo Kim Jihyun Lim Woongsik Jang Dong Hwan Wang 

机构地区：[1]Department of Intelligent Semiconductor Engineering,Chung-Ang University,Seoul,Republic of Korea [2]School of Integrative Engineering,Chung-Ang University,Seoul,Republic of Korea

出　　处：《Carbon Energy》2024年第7期205-218,共14页碳能源（英文）

基　　金：supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF)funded by the Ministry of Science,ICT (MSIT) (Grant Nos.2023R1A2C2008021 and RS-2023-00217270);supported by the Technology Innovation Program (Grant No.20017439,“Development of manufacturing process technique on high-speed signal transmission line for 6G device,”and Grant No.20021915,“Development on Nanocomposite Material of Optical Film[GPa]for Foldable Devices”)funded by the Ministry of Trade,Industry&Energy (MOTIE,Korea).

摘　　要：This study attempts to develop a reproducible thin-film formation technique called vacuum-free(VF)lamination,which transfers thin films using elastomeric polymer-based laminating mediators.Precisely,by controlling the interface characteristics of the mediator based on the work of adhesion,VF lamination is successfully performed for various thicknesses(from 20 to 240 nm)of a conjugated photoactive material composed of poly[(2,6-(4,8-bis(5-(2-ethylhexyl-3-fluoro)thiophen-2-yl)-benzo[1,2-b:4,5-bʹ]dithiophene))-alt-(5,5-(1ʹ,3ʹ-di-2-thienyl-5ʹ,7ʹ-bis(2-ethylhexyl)benzo[1ʹ,2ʹ-c:4ʹ,5ʹ-cʹ]dithiophene-4,8-dione)](a polymer donor)and 2,2ʹ-((2Z,2ʹZ)-((12,13-bis(2-butyloctyl)-3,9-diundecyl-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e]thieno[2ʹʹ,3ʹʹ:4ʹ,5ʹ]thieno[2ʹ,3ʹ:4,5]pyrrolo[3,2-g]thieno[2ʹ,3ʹ:4,5]thieno[3,2-b]indole-2,10-diyl)bis(methanylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile(a nonfullerene acceptor).Interestingly,the organic photovoltaic and photodetecting applications,prepared by the VF lamination process,showed superior performance compared to those of devices prepared by conventional spin-coating.This is due to the overturned surface morphology,which led to enhanced charge transport ability and blocking of the externally injected charge.Thus,the reproducible VF lamination process,exploiting an adhesion-based elastomeric polymer mediator,is a promising thin-film formation technique for developing efficient next-generation organic optoelectronic materials consistent with the solution process.

关 键 词：CONJUGATED nonfullerene acceptor photodetectors photovoltaics polymer vacuum-free lamination 

分 类 号：TB43[一般工业技术]