Yunhui Kuang

Wuhan National Laboratory for Optoelectronics

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Ming Shao

Wuhan National Laboratory for Optoelectronics

Lvpeng Yang

Huazhong University of Science and Technology

Yazhuo Xue

Wuhan National Laboratory for Optoelectronics

Junming Ma

Huazhong University of Science and Technology

Xuewen Huang

The First Affiliated Hospital, Sun Yat-sen University

Jianhua Huang

Huadong Hospital

Jianmin Li

Wuhan University

Fahui Wang

Henan Polytechnic University

Tong Bie

Huazhong University of Science and Technology

Naigen Zhou

Nanchang University

Cooperative Institutions

Huazhong University of Science and Technology

Wuhan National Laboratory for Optoelectronics

Xinyu University

Nanchang University

Chinese Academy of Sciences

China Academy of Engineering Physics

Ningbo University of Technology

Chinese Academy of Medical Sciences & Peking Union Medical College

Chengdu University of Traditional Chinese Medicine

Xiamen University

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Effect of Coating Properties on the Crystal Quality Near the Sidewalls of Multicrystalline Silicon Ingot

Silicon (2023)

Yulong Liu Qi Lei Yunling Li Yunhui Kuang Xuewen Huang

Ingot

Carrier lifetime

Crystal (programming language)

Particle (ecology)

10.1007/s12633-023-02420-8

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Phosphorus gettering in low-cost cast monocrystalline silicon for heterojunction solar cells

Solar Energy Materials and Solar Cells (2024)

Fahui Wang Yunfei Xu Jianmin Li Zhenchao Hong Jianhua Huang

Getter

10.1016/j.solmat.2024.113157

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Citations (2)

Spatial Cross-Linking Strategy for Realizing Stable and Efficient Perovskite Light-Emitting Diodes toward Microscale Displays

ACS Energy Letters (2023)

Junming Ma Lvpeng Yang Yazhuo Xue Yerun Gao Haoyu Chen

Low efficiency, poor stability, and lack of high-resolution patterning hinder the future commercialization of perovskite light-emitting diodes (PeLEDs). Herein, we developed a spatial cross-linking and photolithography strategy to fabricate quasi-2D perovskite films using pentaerythritol tetra(3-mercaptopropionate) (PETMP) and pentaerythritol allyl ether (PAE) as cross-linkers. These cross-linkers containing multiple cross-linking sites facially form hydrophobic and defect-passivating spatial networks at grain boundaries and the surface of perovskite, improving moisture resistance and device efficiency. The cross-linking networks also enhance the lattice rigidity and suppress the ion-migration in perovskite, reducing nonradiative recombination and improving device stability. Consequently, the optimized PeLEDs achieved a high external quantum efficiency (EQE) of 21.36%, and an unencapsulated device exhibits T50 of 47 min at an initial brightness of 1000 cd m–2. Besides, we used photolithography to pattern a perovskite pixel array with a size of ∼80 μm. Our work provides an effective methodology for efficient and stable PeLEDs for high-definition display applications.

Quantum Efficiency

Luminous efficacy

10.1021/acsenergylett.3c01875

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Citations (4)

Study on Phosphorus Gettering Process of N-Type Casting Monocrystalline Silicon

Fahui Wang Yunfei Xu Jianmin Li Jianhua Huang Yunhui Kuang

Getter

10.2139/ssrn.4901916

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Surface modification of diamond wire sawn multi-crystalline silicon wafers by grinding pre-treatment for wet acid texturization

Materials Science in Semiconductor Processing (2020)

Jinbing Zhang Xiaoying Zhou Lang Zhou Yunhui Kuang Yulong Liu

10.1016/j.mssp.2020.105191

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Strategic regulation of crystallization kinetics to achieve efficient pure-red quasi-2D perovskite light-emitting diodes

Chemical Engineering Journal (2025)

Yunhui Kuang Yazhuo Xue Zheng Zhang Lvpeng Yang Tong Bie

10.1016/j.cej.2025.160278

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High-Performance Pure Red Quasi-Two-Dimensional Perovskite Light-Emitting Diodes with Bifunctional Potassium Trifluoroacetate Additive

ACS Materials Letters (2023)

Yunhui Kuang Lvpeng Yang Junming Ma Tong Bie Di Zhang

Solution-processed pure iodide-based quasi-two-dimensional (quasi-2D) perovskites exhibit tremendous potential for pure red light-emitting diodes, required for a wide color gamut display. However, the nonradiative recombination derived from the numerous defects and broad phase distribution restricts the performance of quasi-2D perovskite light-emitting diodes (PeLEDs). Herein, we demonstrate high-performance pure red quasi-2D PeLEDs by introducing a bifunctional potassium trifluoroacetate (KTFA) additive that simultaneously passivates the defects and regulates phase distribution. The KTFA-modified PeLEDs achieve a peak external quantum efficiency of 18.70%, a maximum luminance of 2377.1 cd m–2, and an electroluminescence (EL) emission peak at 650 nm with a CIE coordinate of (0.705,0.295) approaching the pure red emission of Rec.2020 standard. Moreover, our devices demonstrate a stable EL spectrum and a half-lifetime (T50) of 476 min at an initial luminance of 100 cd m–2. Our work provides a viable strategy to boost the performance of quasi-2D PeLEDs.

10.1021/acsmaterialslett.3c00557

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Citations (6)

Rearranging the Phase Distribution of Quasi-2D Perovskite for Efficient and Narrow Emission Perovskite Light-Emitting Diodes

The Journal of Physical Chemistry Letters (2022)

Junming Ma Lvpeng Yang Yun Zhang Yunhui Kuang Ming Shao

Quasi-2D perovskite light-emitting diodes (PeLEDs) have attracted significant attention for their promising light-emitting applications. However, quasi-2D perovskite films typically consist of a broad phase distribution and small grains with a large surface area to volume ratio, leading to inferior color purities and higher defect densities. Herein, a bifunctional additive ((l)-tryptophan bromide, l-TrpBr) was introduced into a quasi-2D perovskite film. The C═O moiety of l-TprBr formed hydrogen bonds with S-MBA+, retarding the coordination between S-MBABr and [PbBr6]4- and suppressing the formation of small-n phases. The C═O moiety also coordinated with unsaturated Pb2+ sites to passivate the defects. Finally, the PeLEDs with l-TrpBr exhibited a significantly improved EQE of 14.32% compared to the control devices (7.88%) and the narrowest fwhm (17 nm) for green quasi-2D PeLEDs reported to date. Our work provides a practical approach to controlling the phase distribution and passivating the defects in quasi-2D perovskite films, toward high-efficiency and color-pure quasi-2D PeLEDs.

Passivation

Moiety

10.1021/acs.jpclett.2c01059

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Citations (32)