Search Results - "Ke, Weijun"

Prospects for low-toxicity lead-free perovskite solar cells by Ke, Weijun, Kanatzidis, Mercouri G.

“…Since the 2012 breakthroughs 1 – 3 , it is now very much accepted that halide perovskite solar cells may have a strong practical impact in next-generation…”
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“Unleaded” Perovskites: Status Quo and Future Prospects of Tin‐Based Perovskite Solar Cells by Ke, Weijun, Stoumpos, Constantinos C., Kanatzidis, Mercouri G.

“…The tremendous interest focused on organic–inorganic halide perovskites since 2012 derives from their unique optical and electrical properties, which make them…”
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Myths and reality of HPbI3 in halide perovskite solar cells by Ke, Weijun, Spanopoulos, Ioannis, Stoumpos, Constantinos C., Kanatzidis, Mercouri G.

“…All-inorganic perovskites have a special place in halide perovskite family because of their potential for better stability. However, the representative cesium…”
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Hybrid Dion–Jacobson 2D Lead Iodide Perovskites by Mao, Lingling, Ke, Weijun, Pedesseau, Laurent, Wu, Yilei, Katan, Claudine, Even, Jacky, Wasielewski, Michael R, Stoumpos, Constantinos C, Kanatzidis, Mercouri G

“…The three-dimensional hybrid organic–inorganic perovskites have shown huge potential for use in solar cells and other optoelectronic devices. Although these…”
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CsPbBr3 perovskite detectors with 1.4% energy resolution for high-energy γ-rays by He, Yihui, Petryk, Matthew, Liu, Zhifu, Chica, Daniel G., Hadar, Ido, Leak, Charles, Ke, Weijun, Spanopoulos, Ioannis, Lin, Wenwen, Chung, Duck Young, Wessels, Bruce W., He, Zhong, Kanatzidis, Mercouri G.

“…Halide perovskite semiconductors are poised to revitalize the field of ionizing radiation detection as they have done to solar photovoltaics. We show that…”
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Effective Carrier‐Concentration Tuning of SnO2 Quantum Dot Electron‐Selective Layers for High‐Performance Planar Perovskite Solar Cells by Yang, Guang, Chen, Cong, Yao, Fang, Chen, Zhiliang, Zhang, Qi, Zheng, Xiaolu, Ma, Junjie, Lei, Hongwei, Qin, Pingli, Xiong, Liangbin, Ke, Weijun, Li, Gang, Yan, Yanfa, Fang, Guojia

“…The carrier concentration of the electron‐selective layer (ESL) and hole‐selective layer can significantly affect the performance of organic–inorganic lead…”
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Low-Temperature Solution-Processed Tin Oxide as an Alternative Electron Transporting Layer for Efficient Perovskite Solar Cells by Ke, Weijun, Fang, Guojia, Liu, Qin, Xiong, Liangbin, Qin, Pingli, Tao, Hong, Wang, Jing, Lei, Hongwei, Li, Borui, Wan, Jiawei, Yang, Guang, Yan, Yanfa

“…Lead halide perovskite solar cells with the high efficiencies typically use high-temperature processed TiO2 as the electron transporting layers (ETLs). Here,…”
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Compositional and Solvent Engineering in Dion–Jacobson 2D Perovskites Boosts Solar Cell Efficiency and Stability by Ke, Weijun, Mao, Lingling, Stoumpos, Constantinos C., Hoffman, Justin, Spanopoulos, Ioannis, Mohite, Aditya D., Kanatzidis, Mercouri G.

“…Hybrid halide 2D perovskites deserve special attention because they exhibit superior environmental stability compared with their 3D analogs. The closer…”
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Uniaxial Expansion of the 2D Ruddlesden–Popper Perovskite Family for Improved Environmental Stability by Spanopoulos, Ioannis, Hadar, Ido, Ke, Weijun, Tu, Qing, Chen, Michelle, Tsai, Hsinhan, He, Yihui, Shekhawat, Gajendra, Dravid, Vinayak P, Wasielewski, Michael R, Mohite, Aditya D, Stoumpos, Constantinos C, Kanatzidis, Mercouri G

“…The unique hybrid nature of 2D Ruddlesden–Popper (R–P) perovskites has bestowed upon them not only tunability of their electronic properties but also…”
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Narrow-Bandgap Mixed Lead/Tin-Based 2D Dion–Jacobson Perovskites Boost the Performance of Solar Cells by Ke, Weijun, Chen, Cong, Spanopoulos, Ioannis, Mao, Lingling, Hadar, Ido, Li, Xiaotong, Hoffman, Justin M, Song, Zhaoning, Yan, Yanfa, Kanatzidis, Mercouri G

“…The advent of the two-dimensional (2D) family of halide perovskites and their demonstration in 2D/three-dimensional (3D) hierarchical film structures broke new…”
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Dopant-Free Tetrakis-Triphenylamine Hole Transporting Material for Efficient Tin-Based Perovskite Solar Cells by Ke, Weijun, Priyanka, Pragya, Vegiraju, Sureshraju, Stoumpos, Constantinos C, Spanopoulos, Ioannis, Soe, Chan Myae Myae, Marks, Tobin J, Chen, Ming-Chou, Kanatzidis, Mercouri G

“…Developing dopant-free hole transporting layers (HTLs) is critical in achieving high-performance and robust state-of-the-art perovskite photovoltaics,…”
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TiO2–ZnS Cascade Electron Transport Layer for Efficient Formamidinium Tin Iodide Perovskite Solar Cells by Ke, Weijun, Stoumpos, Constantinos C, Logsdon, Jenna Leigh, Wasielewski, Michael R, Yan, Yanfa, Fang, Guojia, Kanatzidis, Mercouri G

“…Achieving high open-circuit voltage (V oc) for tin-based perovskite solar cells is challenging. Here, we demonstrate that a ZnS interfacial layer can improve…”
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Reducing Hysteresis and Enhancing Performance of Perovskite Solar Cells Using Low‐Temperature Processed Y‐Doped SnO2 Nanosheets as Electron Selective Layers by Yang, Guang, Lei, Hongwei, Tao, Hong, Zheng, Xiaolu, Ma, Junjie, Liu, Qin, Ke, Weijun, Chen, Zhiliang, Xiong, Liangbin, Qin, Pingli, Chen, Zhao, Qin, Minchao, Lu, Xinhui, Yan, Yanfa, Fang, Guojia

“…Despite the rapid increase of efficiency, perovskite solar cells (PSCs) still face some challenges, one of which is the current–voltage hysteresis. Herein, it…”
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Employing Lead Thiocyanate Additive to Reduce the Hysteresis and Boost the Fill Factor of Planar Perovskite Solar Cells by Ke, Weijun, Xiao, Chuanxiao, Wang, Changlei, Saparov, Bayrammurad, Duan, Hsin-Sheng, Zhao, Dewei, Xiao, Zewen, Schulz, Philip, Harvey, Steven P., Liao, Weiqiang, Meng, Weiwei, Yu, Yue, Cimaroli, Alexander J., Jiang, Chun-Sheng, Zhu, Kai, Al-Jassim, Mowafak, Fang, Guojia, Mitzi, David B., Yan, Yanfa

“…Lead thiocyanate in the perovskite precursor can increase the grain size of a perovskite thin film and reduce the conductivity of the grain boundaries, leading…”
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Combustion Synthesized Zinc Oxide Electron‐Transport Layers for Efficient and Stable Perovskite Solar Cells by Zheng, Ding, Wang, Gang, Huang, Wei, Wang, Binghao, Ke, Weijun, Logsdon, Jenna Leigh, Wang, Hanyu, Wang, Zhi, Zhu, Weigang, Yu, Junsheng, Wasielewski, Michael R., Kanatzidis, Mercouri G., Marks, Tobin J., Facchetti, Antonio

“…Perovskite solar cells (PSCs) have advanced rapidly with power conversion efficiencies (PCEs) now exceeding 22%. Due to the long diffusion lengths of charge…”
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Semi-transparent, high-performance lead-free Cs3Bi2I9 single crystal self-driven photodetector by Dong, Kailian, Zhou, Hai, Xiao, Meng, Gui, Pengbin, Gao, Zheng, Yao, Fang, Shao, Wenlong, Liu, Chenwei, Tao, Chen, Ke, Weijun, Fang, Guojia

“…All-inorganic Bi-based perovskites have attracted much attention due to their excellent stability, environmentally friendly, and low-cost solution…”
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Modern Processing and Insights on Selenium Solar Cells: The World's First Photovoltaic Device by Hadar, Ido, Song, Tze‐Bin, Ke, Weijun, Kanatzidis, Mercouri G.

“…The first solid‐state solar cells, fabricated ≈140 years ago, were based on selenium; these early studies initiated the modern research on photovoltaic…”
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Spontaneous crystallization of strongly confined CsSnxPb1-xI3 perovskite colloidal quantum dots at room temperature by Zhang, Louwen, Zhou, Hai, Chen, Yibo, Zheng, Zhimiao, Huang, Lishuai, Wang, Chen, Dong, Kailian, Hu, Zhongqiang, Ke, Weijun, Fang, Guojia

“…The scalable and low-cost room temperature (RT) synthesis for pure-iodine all-inorganic perovskite colloidal quantum dots (QDs) is a challenge due to the phase…”
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Photovoltaic Properties of Two-Dimensional (CH3NH3)2Pb(SCN)2I2 Perovskite: A Combined Experimental and Density Functional Theory Study by Xiao, Zewen, Meng, Weiwei, Saparov, Bayrammurad, Duan, Hsin-Sheng, Wang, Changlei, Feng, Chunbao, Liao, Weiqiang, Ke, Weijun, Zhao, Dewei, Wang, Jianbo, Mitzi, David B., Yan, Yanfa

“…We explore the photovoltaic-relevant properties of the 2D MA2Pb­(SCN)2I2 (where MA = CH3NH3 +) perovskite using a combination of materials synthesis,…”
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Improved Environmental Stability and Solar Cell Efficiency of (MA,FA)PbI3 Perovskite Using a Wide-Band-Gap 1D Thiazolium Lead Iodide Capping Layer Strategy by Gao, Lili, Spanopoulos, Ioannis, Ke, Weijun, Huang, Sheng, Hadar, Ido, Chen, Lin, Li, Xiaolei, Yang, Guanjun, Kanatzidis, Mercouri G

“…There is strong interest in improving the environmental stability of hybrid perovskite solar cells while maintaining high efficiency. Here, we solve this…”
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