DataVXAdvanced Optical MaterialsPaper
journal article·2026-06

DMAPbI 3 ‐Enabled Synthesis of Stable CsPbI 3 Nanocrystals for Light‐Emitting Diodes With 27.5% External Quantum Efficiency

Guohao Bu, Shujian Wang, Chen Yang, Wenyuan Zhou, Chao Tian, Naiwei Liu, Jun Pan, Chaoyu Xiang

Advanced Optical Materials· Volume 14· Issue 21
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Source abstract

Abstract

ABSTRACT The synthesis of perovskite nanocrystals for light‐emitting diodes typically employs poorly controlled ion‐mediated precipitation processes, suffering from low photoluminescence quantum yield (PLQY), inhomogeneous morphology, and poor stability. Herein, by adjusting the nucleation method with a new type of precursor, namely “DMAPbI 3 ”, high‐quality and low‐defect‐density perovskite CsPbI 3 nanocrystals were successfully synthesized, with PLQY of 93% emitting at 659 nm. Particularly, the CsPbI 3 nanocrystals exhibit enhanced environmental stability, maintaining ∼70% of their initial photoluminescence intensity after 6 h of UV irradiation exposure or 100°C aging. Utilized as the luminescent layer, the fabricated perovskite LED (PeLED) device shows a peak EQE of 27.5%, representing an almost two‐fold enhancement compared to 14.7% for the control PeLED device. This simple and efficient approach is well‐suited for large‐scale production and practical applications.
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Research context

NanomaterialsElectronic materials

OpenAlex topics: Perovskite Materials and Applications · Inorganic Chemistry and Materials · Luminescence Properties of Advanced Materials

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

Affiliations

College of Materials Science and Engineering Science and Education Integration College of Energy and Carbon Neutralization Zhejiang University of Technology Hangzhou China

Laboratory of Optoelectronic and Information Materials and Devices Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo China

Laboratory of Advanced Nano‐Optoelectronic Materials and Devices Qianwan Institute of CNITECH Ningbo China

BOE Engineering Research Center of Panel Display BOE Technology Group Co., Ltd Beijing China

National Engineering Research Center of Novel Display Beijing China

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China · Natural Science Foundation of Ningbo Municipality

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