DataVXAdvanced Optical MaterialsPaper
journal article·2021-02

Synergistically Enhanced Amplified Spontaneous Emission by Cd Doping and Cl‐Assisted Crystallization

Lu Zhang, Jialun Wen, Xiaodong Ren, Shengye Jin, Shengzhong Liu

Advanced Optical Materials· Volume 9· Issue 4
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Source abstract

Abstract

Abstract Organic−inorganic hybrid halide perovskite materials have recently been recognized as a promising optical gain medium, and the development of optically pumped amplified spontaneous emission (ASE) of perovskite materials with low threshold and high optical gain will be on the only way to go for realizing its commercial perovskite laser. In this work, enhanced‐performance ASE with lower threshold and higher optical gain is obtained in CdCl2 passivated FA0.9MA0.15Cs0.3PbI2.7Br0.3 (FAMACs) polycrystalline films coated with poly methyl methacrylate (PMMA) layer. The ASE threshold of the FAMACs polycrystalline films with CdCl2 is significantly reduced from 18.7 to 7.9 µJ cm−2, with an enhanced ASE output intensity and stability. The improved ASE performance can be attributed to the synergistic effect of Cd ion doping and Cl‐ion‐assisted crystallization in the FAMACs polycrystalline films, exhibiting remarkably enhanced photoluminescence, a prolonged decay lifetime and a low defect density, and thus leading to easily achieve the population inversion due to the reduction of nonradiative recombination of carriers in the optical gain medium.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Organic Light-Emitting Diodes Research · Optical properties and cooling technologies in crystalline materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China

Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China

State Key Laboratory of Molecular Reaction Dynamics iChEM Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian Liaoning 116023 China

University of the Chinese Academy of Sciences Beijing 100039 China

Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education Shaanxi Normal University Xi'an 710119 China

Dalian National Laboratory for Clean Energy iChEM Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian Liaoning 116023 China

Funding

Chinese Academy of Sciences · National Basic Research Program of China · Higher Education Discipline Innovation Project · Ministry of Science and Technology · National Natural Science Foundation of China

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