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journal article·2023-05

Glutamine Induced High‐Quality Perovskite Film to Improve the Efficiency of NIR Perovskite Light‐Emitting Diodes

Jianan Chen, Zhaobing Tang, Yangzhou Zhou, Shuo Ding, Liang Li, Lei Qian, Chaoyu Xiang

Small· Volume 19· Issue 19
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Source abstract

Abstract

Abstract Formamidine lead iodide (FAPbI3) is an important material for realizing high‐performance near‐infrared light‐emitting diodes (NIR‐LEDs). However, due to the uncontrollable growth of solution‐processed films which usually causes low coverage, and poor surface morphology, the development of FAPbI3‐based NIR‐LEDs is hindered, restraining its potential industrial applications. In this work, by employing glutamine (Gln) in perovskite precursor, the quality of FAPbI3 film is improved significantly. Due to the ameliorated solution process by the organic additive, the film coverage over the substrate is substantially enhanced. Meanwhile, the trap state of grain is largely reduced. Consequently, NIR perovskite LEDs are demonstrated with a maximum external quantum efficiency (EQE) of 15% with the emission peak at 795 nm, which is four times higher than the device with pristine perovskite film.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Organic Light-Emitting Diodes Research · Quantum Dots Synthesis And Properties

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

Affiliations

Laboratory of Advanced Nano‐Optoelectronic Materials and Devices Qianwan Institute of CNITECH Zhongchuang 1st Road, Hangzhou Bay New Zone Ningbo Zhejiang 315000 China

Department of Mechanical Engineering Ningbo University Ningbo Zhejiang 315201 China

Division of Functional Materials and Nanodevices Ningbo Institute of Materials Technology and Engineering Chinese Academy of Science 1219 West Zhongguan Road Ningbo Zhejiang 315201 China

Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology & Engineering Chinese Academy of Sciences Ningbo Zhejiang 315000 China

Macao Institute of Materials Science and Engineering (MIMSE) MUST‐SUDA Joint Research Center for Advanced Functional Materials Zhuhai MUST Science and Technology Research Institute Macau University of Science and Technology Taipa Macao 999078 China

Funding

National Key Research and Development Program of China · 3315 Innovation Team in Ningbo City · Natural Science Foundation of Zhejiang Province

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