Article
Chemistry, Multidisciplinary
Siyu Yan, Wanli Tian, Hua Chen, Kaixin Tang, Tingting Lin, Gaoyu Zhong, Longzhen Qiu, Xiaoyong Pan, Weizhi Wang
Summary: Lead-based perovskite light-emitting diodes (PeLEDs) exhibit excellent performance, while in order to develop more environmentally friendly perovskite materials, researchers have developed a novel manganese-based organic-inorganic hybrid perovskite with superior performance and stability compared to other lead-free PeLEDs.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Zong-Liang Tseng, Lung-Chien Chen, Li-Wei Chao, Meng-Ju Tsai, Dian Luo, Nurul Ridho Al Amin, Shun-Wei Liu, Ken-Tsung Wong
Summary: In recent years, the performance and efficiency of perovskite quantum dots and QD-based light-emitting diodes have greatly improved, but the development of near-infrared QLEDs lags behind. In this study, new near-infrared-emissive perovskite quantum dots were developed through post-treatment, achieving high photoluminescence quantum yield and preparing high-quality films suitable for highly efficient near-infrared QLED applications.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Siyu Yan, Wanli Tian, Hua Chen, Kaixin Tang, Tingting Lin, Gaoyu Zhong, Longzhen Qiu, Xiaoyong Pan, Weizhi Wang
Summary: The two-dimensional layered lead perovskite with high deep blue photoluminescence quantum yield provides a route to fabricate stable and high-performance deep blue emission PeLEDs, surpassing previously reported devices in brightness and efficiency.
ADVANCED OPTICAL MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Tajamul A. A. Wani, Javad Shamsi, Xinyu Bai, Neha Arora, M. Ibrahim Dar
Summary: Metal halide perovskites (MHPs) are exceptional semiconductors with intriguing properties, and all-inorganic perovskites have advantages over hybrid compositions, making them a focus of intense research for LEDs. This Review discusses the application of all-inorganic CsPbX3 nanocrystals in developing blue and white LEDs, addressing the challenges faced and potential strategies adopted for rational control over dimensions and shape symmetry. The significance of matching driving currents and balancing aging and temperature for efficient, uniform, and stable white electroluminescence is emphasized.
Article
Chemistry, Physical
Xiaoming Mo, Tao Li, Fengchang Huang, Zhuxin Li, Yulu Zhou, Tao Lin, Yifang Ouyang, Xiaoma Tao, Caofeng Pan
Summary: The research focuses on using copper(I) to fully substitute lead in order to produce high-quality, air stable yellow emitting CsCu2I3 single crystals. These single crystals exhibit a record photoluminescence quantum yield exceeding 50% and are capable of producing white light-emitting diodes that can work continuously for over 580 hours in air. Photodetectors fabricated using these single crystals show distinct UV response with a fast response time as low as 50.4 ms.
Article
Nanoscience & Nanotechnology
Qi Wang, Ke Li, Haohan Yang, Donghai Lin, Wan Y. Shih, Wei-Heng Shih
Summary: This paper successfully prepared perovskite films with good stability and fluorescence performance using electrospinning technique, providing a new solution for the application of optoelectronic devices.
Review
Materials Science, Multidisciplinary
Sanjit Sarkar
Summary: All-inorganic halide perovskite (IHP) materials exhibit superior stability, but performance improvement is still needed, and the issue of lead toxicity needs to be addressed. Synthesis, stability, and performance are key aspects of optoelectronic applications, and bringing them together can provide better insight into the challenges.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Review
Chemistry, Multidisciplinary
Yuyu Hu, Shijie Cao, Peng Qiu, Meina Yu, Huiyun Wei
Summary: This review focuses on the rapid development of light-emitting diodes (LEDs) based on all-inorganic lead halide perovskite quantum dots (PQDs), with particular emphasis on the challenges faced by blue-emitting PeQLEDs. The review summarizes strategies to improve device performance and provides suggestions and outlooks for future research directions of blue PeQLEDs.
Article
Materials Science, Multidisciplinary
Jianfeng Zhang, Lin Wang, Xiaoyu Zhang, Guohua Xie, Guohua Jia, Jianhua Zhang, Xuyong Yang
Summary: Metal halide perovskites have been widely used in optoelectronic devices, with green, red, and near-infrared PeLEDs achieving high external quantum efficiencies. However, blue PeLEDs face challenges such as low quantum yields, emission spectrum instability, and difficulties in charge injection. Research is ongoing to improve the efficiency of blue PeLEDs and address these challenges.
Article
Chemistry, Multidisciplinary
Haoran Jia, Hongfei Shi, Runnan Yu, Huanyu Ma, Zhibin Wang, Chao Zou, Zhan'ao Tan
Summary: This study introduces an organic additive, biuret, to address the issues of Sn oxidation and fast crystallization in lead-free perovskite emitters. The interaction between biuret and 2D Sn halide perovskite is shown to be robust, improving the luminous efficiency of the perovskite light-emitting diodes (PeLEDs). The research provides insights into the chemical interaction between organics and 2D Sn halide perovskites, contributing to the development of efficient lead-free PeLEDs.
Article
Chemistry, Multidisciplinary
Yuqing Zhang, Zehao Zhang, Wenjin Yu, Yong He, Zhijian Chen, Lixin Xiao, Jun-jie Shi, Xuan Guo, Shufeng Wang, Bo Qu
Summary: A novel lead-free double perovskite quantum dots were successfully fabricated for white light-emitting diodes with excellent optoelectronic performance and stability. The device exhibits good luminous properties and stability, making it suitable for future lighting applications.
Article
Chemistry, Physical
Lei Cai, Dong Liang, Xuechun Wang, Jiaqing Zang, Guilin Bai, Zhiwei Hong, Yatao Zou, Tao Song, Baoquan Sun
Summary: This study successfully prepared all-inorganic pure-blue perovskite films with high photoluminescence quantum yield by partially replacing toxic lead ions with ecofriendly strontium ions. The resulting PeLEDs achieved high luminance and efficiency, setting a record radiance among the most efficient PeLEDs and displaying exceptional spectral stability during electrical bias operation.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Lingjiao Zhang, Sujuan Hu, Min Guo, Yunfei Ren, Linfeng Wei, Wenxuan Li, Faxu Lin, Zhiyong Yang, Zhenyu Yang, Chuan Liu, Baiquan Liu
Summary: Perovskite light-emitting diodes (PeLEDs) are a promising optoelectronic device for next-generation displays and lighting technology. However, the performance of blue PeLEDs still lags behind other colors. In this study, a multi-functional chiral ligand and ladder-like hole transport layers were introduced to improve the efficiency and power efficiency of blue PeLEDs.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Lingjiao Zhang, Sujuan Hu, Min Guo, Yunfei Ren, Linfeng Wei, Wenxuan Li, Faxu Lin, Zhiyong Yang, Zhenyu Yang, Chuan Liu, Baiquan Liu
Summary: The performance of blue Perovskite light-emitting diodes (PeLEDs) has been significantly improved by introducing a multi-functional chiral ligand, which can passivate defects, modulate phase distribution, enhance photoluminescence quantum yield, improve film morphology, and enhance charge transport. Additionally, ladder-like hole transport layers have been established, boosting charge injection and balance. As a result, sky-blue PeLEDs with high external quantum efficiency and power efficiency have been achieved.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Wenxu Yin, Xiaoyu Zhang, Xuyong Yang, Andrey L. Rogach, Weitao Zheng
Summary: This article summarizes the recent progress in the development of near-infrared quantum dot LEDs, focusing on how their device structure and emitter properties facilitate improvement of device performance. The challenges and opportunities associated with these LEDs are also discussed.
Article
Multidisciplinary Sciences
Chengbo Tian, German Betancourt-Solis, Ziang Nan, Kaikai Liu, Kebin Lin, Jianxun Lu, Liqiang Xie, Luis Echegoyen, Zhanhua Wei
Summary: Fullerene-based electron-transporting layers play a crucial role in the performance of inverted perovskite solar cells. By modifying the structure of PCBM to PCBB, researchers were able to enhance the intermolecular interactions and suppress self-aggregation, leading to improved stability and efficiency of the device. This study provides a promising approach for the design of fullerene derivatives for high-performance PSCs.
Article
Engineering, Environmental
Yueyue Shen, Huilin Tang, Feng Liu, Kebin Lin, Jianxun Lu, Chuanzhong Yan, Wenjing Feng, Kaikai Liu, Liqin Wu, Mingjie Li, Zhanhua Wei, Keyou Yan
Summary: This research successfully tunes and stabilizes the cyan emission of MA-based perovskite materials through a steric stabilization approach, achieving a high photoluminescence quantum yield by reducing the dimension of the perovskite. Combining double-cation modified perovskites with LED InGaN chips can produce stable cyan emission LEDs and improve color rendering index of white LEDs.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Kebin Lin, Chuanzhong Yan, Randy P. Sabatini, Wenjing Feng, Jianxun Lu, Kaikai Liu, Dongxin Ma, Yueyue Shen, Yaping Zhao, Mingliang Li, Chengbo Tian, Liqiang Xie, Edward H. Sargent, Zhanhua Wei
Summary: Perovskite light-emitting diodes (Pero-LEDs) have gained significant attention due to their high color purity and solution processing. Passivating non-radiative defects has been found to improve device performance. By utilizing a dual-phase regulation method, a CsPbBr3&Cs4PbBr6 perovskite layer with efficient electrical injection was grown, resulting in Pero-LEDs with high quantum efficiency and luminance.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Mingliang Li, Yaping Zhao, Xiangqian Qin, Qingshan Ma, Jianxun Lu, Kebin Lin, Peng Xu, Yuqing Li, Wengjing Feng, Wen-Hua Zhang, Zhanhua Wei
Summary: Recently, surface passivation has been shown to be crucial for achieving efficient and stable perovskite light-emitting diodes (Pero-LEDs). In this study, a conductive molecule, 2,7-bis(diphenylphosphoryl)-9,9'-spirobifluorene (SPPO13), was introduced to modify the perovskite emitting layer, leading to improved device performance.
Article
Chemistry, Multidisciplinary
Wenjing Feng, Yaping Zhao, Kebin Lin, Yuming Liang, Kaikai Liu, Liqiang Xie, Chengbo Tian, Tianshuai Lyu, Zhanhua Wei
Summary: A polymer infiltrative treatment method has been developed to improve the performance of perovskite light-emitting diodes (Pero-LEDs). The method effectively passivates defects in the perovskite film, resulting in high-quality films and achieving high EQEs in Pero-LEDs.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Editorial Material
Chemistry, Multidisciplinary
Kebin Lin, Zhanhua Wei
SCIENCE CHINA-CHEMISTRY
(2023)
Article
Chemistry, Physical
Xiang Guan, Jianxun Lu, Qi Wei, Yuqing Li, Yuanyuan Meng, Kebin Lin, Yaping Zhao, Wenjing Feng, Kaikai Liu, Guichuan Xing, Zhanhua Wei
Summary: In recent years, nontoxic Sn-based perovskite light-emitting diodes (Pero LEDs) have shown rapid development. However, the preparation of high-quality Sn-based perovskite films is challenging due to the heavy self-doping of Sn4+. This study reveals that the disproportionation decomposition of Sn2+ during the annealing process is critical in degrading device performance. By introducing formamidine thiocyanate as a thermal-sacrificial agent, efficient Sn-based Pero-LEDs with a maximum external quantum efficiency of 5.3% and ultralow efficiency roll-off were achieved.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Wenjing Feng, Kebin Lin, Wenqiang Li, Xiangtian Xiao, Jianxun Lu, Chuanzhong Yan, Xinyi Liu, Liqiang Xie, Chengbo Tian, Dan Wu, Kai Wang, Zhanhua Wei
Summary: By low-temperature annealing, crystal orientation along the (110) plane can be manipulated, leading to orderly packed crystals that increase surface coverage and reduce defect states, resulting in high-performance and stable PeLEDs.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Crystallography
Li Ming-liang, Lin Ke-bin, Lu Jian-xun, Feng Wen-jing, Ma Qing-shan, Zhang Wen-hua, Wei Zhan-hua
Summary: By directly adding cesium chloride to the PEDOT: PSS aqueous solution, the hole transport capacity of the PEDOT: PSS film can be significantly improved, leading to a more balanced carrier transport. The modified PEDOT: PSS film allows for devices with high brightness and external quantum efficiency, showing significant improvements compared to undoped samples.
CHINESE JOURNAL OF LIQUID CRYSTALS AND DISPLAYS
(2021)
Article
Chemistry, Physical
Peiquan Song, Liqiang Xie, Lina Shen, Kaikai Liu, Yuming Liang, Kebin Lin, Jianxun Lu, Chengbo Tian, Zhanhua Wei
Summary: The study demonstrates the importance of electrophoresis deposition in improving the performance of planar perovskite solar cells. The SnO2 thin films prepared by electrophoresis followed by spin-coating show significantly suppressed non-radiative recombination, leading to an enhanced photoelectric power conversion efficiency and long-term stability of the devices.
ACTA PHYSICO-CHIMICA SINICA
(2021)