Solvent Modulation of Chiral Perovskite Films Enables High Circularly Polarized Luminescence Performance from Chiral Perovskite/Quantum Dot Composites

Zhu, Hongmei1; Wang, Qingqian1; Sun, Kun3; Chen, Wei3,4; Tang, Jun2; Hao, Junjie1; Wang, Zhaojin1; Sun, Jiayun1,5; Choy, Wallace C. H.1,5; Muller-Buschbaum, Peter3,6; Sun, Xiao Wei1; Wu, Dan2; Wang, Kai1

2023-02-01

10.1021/acsami.2c20716

ACS Applied Materials & Interfaces   Impact Factor & Quartile

1944-8244

1944-8252

Materials with circularly polarized luminescence (CPL) activity are promising in many chiroptoelectronics fields, such as for biological probes, asymmetric photosynthesis, information storage, spintronic devices, and so on. Promoting the value of the dissymmetry factor (glum) for the CPL-active materials based on chiral perovskite draws increasing attention since a higher glum value indicates better CPL. In this work, we find that, after being treated with a facile solvent modulation strategy, the chirality of 2D chiral perovskite films has been enhanced a lot, which we attribute to an increased lattice distortion degree. By forming chiral perovskite/ quantum dot (QD) composites, the CPL-active material is successfully obtained. The calculated maximum |glum| of these composites increased over 4 times after solvent modulation treatment (1.53 x 10-3 for the pristine sample of R-DMF and 6.91 x 10-3 for R- NMP) at room temperature. Moreover, the enhancement of the CPL intensity is ascribed to two aspects: one is the generation and transportation of spin-polarized charge carriers from chiral perovskite films to combine in the QD layer, and the other is the solvent modulation strategy to enlarge the lattice distortion of chiral perovskite films. This facile route provides an effective way to construct CPL-active materials. More importantly, this kind of composite material (chiral perovskite film/QD layer) can be easily applied for fabricating circularly polarized light-emitting diode devices for electroluminescence.

chiral perovskite QD composites CPL-active materials solvent modulation chirality high circularly polarized luminescence glum

SCI

English

First ; Corresponding

National Natural Science Foundation of China["JCYJ20190809152411655","JCYJ20210324104413036","GDRC202110"] ; Shenzhen Basic Research General Program["20220717215521001","2021M691397"] ; Natural Science Foundation of Top Talent of Shenzhen Technology University (SZTU)[2021M691411] ; Shenzhen Stable Support Research Foundation[2021A1515110535] ; China Postdoctoral Science Foundation["2022A1515011071","2022A1515011614"] ; Guangdong Province Fundamental and Applied Fundamental Research Fund[2019A1515111093] ; null[62122034] ; null[61875082] ; null[62205138] ; null[EXC 2089/1 -390776260]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000931735800001

AMER CHEMICAL SOC

Web of Science

1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
2.Shenzhen Technol Univ SZTU, Coll New Mat & New Energies, Shenzhen 518118, Peoples R China
3.Tech Univ Munich, Lehrstuhl Funkt Mat, Phys Dept, D-85748 Garching, Germany
4.Shenzhen Technol Univ SZTU, Coll Engn Phys, Shenzhen 518118, Peoples R China
5.Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong 999077, Peoples R China
6.Tech Univ Munich, Heinz Maier Leibnitz Zentrum MLZ, D-85748 Garching, Germany

Zhu, Hongmei,Wang, Qingqian,Sun, Kun,et al. Solvent Modulation of Chiral Perovskite Films Enables High Circularly Polarized Luminescence Performance from Chiral Perovskite/Quantum Dot Composites[J]. ACS Applied Materials & Interfaces,2023.

Zhu, Hongmei.,Wang, Qingqian.,Sun, Kun.,Chen, Wei.,Tang, Jun.,...&Wang, Kai.(2023).Solvent Modulation of Chiral Perovskite Films Enables High Circularly Polarized Luminescence Performance from Chiral Perovskite/Quantum Dot Composites.ACS Applied Materials & Interfaces.

Zhu, Hongmei,et al."Solvent Modulation of Chiral Perovskite Films Enables High Circularly Polarized Luminescence Performance from Chiral Perovskite/Quantum Dot Composites".ACS Applied Materials & Interfaces (2023).