Cholesteric-Superhelix-Enabled Reconfigurable Circularly Polarized Luminescence from Uniaxially Aligned Upconversion Nanorod Films

He, Huilin1,2; Wang, Jiawei1; Li, Ke1; Cen, Mengjia1; Cai, Wenfeng1; Liu, Jianxun1; Luo, Dan1; Lu, Yan-Qing3; Liu, Yan Jun1

2022-06-01

10.1002/lpor.202200115

Laser & Photonics Reviews   影响因子和分区

1863-8880

1863-8899

The dissymmetry factor (|g(lum)|) in circularly polarized luminescence (CPL) shows great significance in many potential applications. The development of upconversion circularly polarized luminescence (UC-CPL) with a large dissymmetry factor is still limited by structural defects, especially in a self-assembly system. Here, a self-organized cholesteric liquid crystals (CLCs) composite is demonstrated, induced by uniaxially aligned upconversion nanorods (UCNRs) film, overcoming the aggregation issue via direct doping. The well-aligned UCNR film serves as a polarized emitter, and the cholesteric superhelixstructure enables the conversion from polarized upconversion luminescence (UCL) to a completely UC-CPL with an ultrahigh |g(lum)| value up to 1.92. Upon changing the concentration of chiral dopants or heating, the chiral UCL can be conveniently modulated via shifting the CLC reflection band to overlap with the UCL band. Moreover, UC-CPL with bidirectional asymmetric polarizations and emissions is achieved via forward and backward excitations. Furthermore, reversible switching from circular to linear polarization of UCL can be achieved by applying an electric field. Such a composite material system features versatile multimode and multiband modulation of UC-CPL with the significantly enhanced dissymmetry factor and multichannel modulation, providing new opportunities for advanced applications in photonics and biological optoelectronics.

cholesteric liquid crystals circularly polarized luminescence dissymmetry factor reflection bands upconversion luminescence

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China[62075093] ; Guangdong Innovative and Entrepreneurial Research Team Program[2017ZT07C071] ; Natural Science Foundation of Guangdong Province[2019A1515110864] ; Shenzhen Science and Technology Innovation Commission["JCYJ20180305180635082","GJHZ20180928155207206","JCYJ20170817111349280"]

Optics ; Physics

Optics ; Physics, Applied ; Physics, Condensed Matter

WOS:000806716400001

WILEY-V C H VERLAG GMBH

20222312203004

Circular polarization ; Dichroism ; Electric fields ; Luminescence ; Modulation ; Nanorods ; Semiconductor doping

Electricity: Basic Concepts and Phenomena:701.1 ; Electromagnetic Waves:711 ; Semiconducting Materials:712.1 ; Light/Optics:741.1 ; Nanotechnology:761 ; Chemical Products Generally:804 ; Solid State Physics:933

Web of Science

1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
2.Harbin Inst Technol, Harbin 150001, Peoples R China
3.Nanjing Univ, Coll Engn & Appl Sci, Nanjing 210093, Peoples R China

He, Huilin,Wang, Jiawei,Li, Ke,et al. Cholesteric-Superhelix-Enabled Reconfigurable Circularly Polarized Luminescence from Uniaxially Aligned Upconversion Nanorod Films[J]. Laser & Photonics Reviews,2022,16.

He, Huilin.,Wang, Jiawei.,Li, Ke.,Cen, Mengjia.,Cai, Wenfeng.,...&Liu, Yan Jun.(2022).Cholesteric-Superhelix-Enabled Reconfigurable Circularly Polarized Luminescence from Uniaxially Aligned Upconversion Nanorod Films.Laser & Photonics Reviews,16.

He, Huilin,et al."Cholesteric-Superhelix-Enabled Reconfigurable Circularly Polarized Luminescence from Uniaxially Aligned Upconversion Nanorod Films".Laser & Photonics Reviews 16(2022).