Photo-induced flexible semiconductor CdSe/CdS quantum rods alignment

作     者：Wanlong Zhang Julian Schneider Maksym F.Prodanov Valerii V.Vashchenko Andrey L.Rogach Xiaocong Yuan Abhishek K.Srivastava Wanlong Zhang;Julian Schneider;Maksym F. Prodanov;Valerii V. Vashchenko;Andrey L. Rogach;Xiaocong Yuan;Abhishek K. Srivastava

作者机构：Nanophotonics Research CenterInstitute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060China State Key Laboratory of Advanced Displays and Optoelectronics TechnologiesDepartment of Electronic&Computer EngineeringHong Kong University of Science and TechnologyHong Kong SARChina Department of Materials Science and Engineering and Centre for Functional Photonics(CFP)City University of Hong KongHong Kong SARChina 

出 版 物：《半导体学报:英文版》 (Journal of Semiconductors)

年 卷 期：2023年第44卷第9期

页      面：83-89页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：supported by the Guangdong Major Project of Basic and Applied Basic Research(No.2020B0301030009) the National Natural Science Foundation of China(Nos.62005180,61935013) the Zhejiang Lab Open Research Project(No.K2022MG0AB01) RGC of Hong Kong S.A.R.(No.26202019) the State Key Laboratory of Advanced Displays and Optoelectronics Technologies(HKUST)(No.ITC-PSKL12EG02) 

主　　题：quantum rods photo alignment liquid crystal flexible alignment polarized emission 

摘      要：The anisotropic absorption and emission from semiconductor CdSe/CdS quantum rods(QRs)provide extra benefits among other photoluminescence *** photo-induced alignment technique,the QRs can be oriented in liquid crystal polymer matrix at a large *** this article,a 2D Dammann grating pattern,within“SKLcharacters domains aligned QRs in composite film,was fabricated by multi-step photo exposure using several photo masks,and a continuous geometric lens profile pattern aligned QRs was realized by the single step polarization converting holographic irradiation *** polarized optical microscope and fluorescence microscope are employed to determine the liquid crystal director profiles and QRs anisotropic excitation *** have been able to orient the QRs in fine binary and continuous patterns that confirms the strong quantum rod aligning ability of the proposed ***,the proposed approach paves a way for photoinduced flexible QRs alignments to provide a highly specific and difficult-to-replicate security application at a large scale.