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34 results on '"Lu ZHENG"'

1. Buried‐Metal‐Grid Electrodes for Efficient Parallel‐Connected Perovskite Solar Cells

Author

Li, Lei, primary, Chen, Peng, additional, Su, Rui, additional, Xu, Hongyu, additional, Li, Qiuyang, additional, Zhong, Qixuan, additional, Yan, Haoming, additional, Yang, Xiaoyu, additional, Hu, Juntao, additional, Li, Shunde, additional, Huang, Tianyu, additional, Xiao, Yun, additional, Liu, Bin, additional, Ji, Yongqiang, additional, Wang, Dengke, additional, Sun, Huiliang, additional, Guo, Xugang, additional, Lu, Zheng‐Hong, additional, Snaith, Henry J., additional, Gong, Qihuang, additional, Zhao, Lichen, additional, and Zhu, Rui, additional

Published
2023
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3. Efficient Inverted Perovskite Solar Cells via Improved Sequential Deposition

Author

Chen, Peng, primary, Xiao, Yun, additional, Li, Lei, additional, Zhao, Lichen, additional, Yu, Maotao, additional, Li, Shunde, additional, Hu, Juntao, additional, Liu, Bin, additional, Yang, Yingguo, additional, Luo, Deying, additional, Hou, Cheng‐Hung, additional, Guo, Xugang, additional, Shyue, Jing‐Jong, additional, Lu, Zheng‐Hong, additional, Gong, Qihuang, additional, Snaith, Henry J., additional, and Zhu, Rui, additional

Published
2022
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4. Refining Perovskite Heterojunctions for Effective Light‐Emitting Solar Cells

Author

Chen, Peng, primary, Hu, Juntao, additional, Yu, Maotao, additional, Li, Peicheng, additional, Su, Rui, additional, Wang, Zaiwei, additional, Zhao, Lichen, additional, Li, Shunde, additional, Yang, Yingguo, additional, Zhang, Yuzhuo, additional, Li, Qiuyang, additional, Luo, Deying, additional, Gong, Qihuang, additional, Sargent, Edward H., additional, Zhu, Rui, additional, and Lu, Zheng‐Hong, additional

Published
2022
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5. Fast Near‐Infrared Photodetection Using III–V Colloidal Quantum Dots

Author

Sun, Bin, primary, Najarian, Amin Morteza, additional, Sagar, Laxmi Kishore, additional, Biondi, Margherita, additional, Choi, Min‐Jae, additional, Li, Xiyan, additional, Levina, Larissa, additional, Baek, Se‐Woong, additional, Zheng, Chao, additional, Lee, Seungjin, additional, Kirmani, Ahmad R., additional, Sabatini, Randy, additional, Abed, Jehad, additional, Liu, Mengxia, additional, Vafaie, Maral, additional, Li, Peicheng, additional, Richter, Lee J., additional, Voznyy, Oleksandr, additional, Chekini, Mahshid, additional, Lu, Zheng‐Hong, additional, García de Arquer, F. Pelayo, additional, and Sargent, Edward H., additional

Published
2022
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11. Regulating the Interfacial Electronic Coupling of Fe 2 N via Orbital Steering for Hydrogen Evolution Catalysis

Author

Wu, Yishang, primary, Cai, Jinyan, additional, Xie, Yufang, additional, Niu, Shuwen, additional, Zang, Yipeng, additional, Wu, Shaoyang, additional, Liu, Yun, additional, Lu, Zheng, additional, Fang, Yanyan, additional, Guan, Yong, additional, Zheng, Xusheng, additional, Zhu, Junfa, additional, Liu, Xiaojing, additional, Wang, Gongming, additional, and Qian, Yitai, additional

Published
2020
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12. A Chemically Orthogonal Hole Transport Layer for Efficient Colloidal Quantum Dot Solar Cells

Author

Biondi, Margherita, primary, Choi, Min‐Jae, additional, Ouellette, Olivier, additional, Baek, Se‐Woong, additional, Todorović, Petar, additional, Sun, Bin, additional, Lee, Seungjin, additional, Wei, Mingyang, additional, Li, Peicheng, additional, Kirmani, Ahmad R., additional, Sagar, Laxmi K., additional, Richter, Lee J., additional, Hoogland, Sjoerd, additional, Lu, Zheng‐Hong, additional, García de Arquer, F. Pelayo, additional, and Sargent, Edward H., additional

Published
2020
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13. Penta ‐PdPSe: A New 2D Pentagonal Material with Highly In‐Plane Optical, Electronic, and Optoelectronic Anisotropy

Author

Liujiang Zhou, Chunguang Hu, Zheng Liu, Guowei Yang, Pingqi Gao, Lu Zheng, Wei Fu, Weina Zhao, Wanfu Shen, Jiantian Zhang, Luo Yan, Chao Zhu, Peiyang Li, Peng Yu, and Hongxiang Lei

Subjects
Electron mobility, Materials science, business.industry, Mechanical Engineering, Conductance, Photodiode, law.invention, Responsivity, In plane, Mechanics of Materials, law, Lattice (order), Optoelectronics, General Materials Science, business, Anisotropy
Abstract

Due to their low-symmetry lattice characteristics and intrinsic in-plane anisotropy, 2D pentagonal materials, a new class of 2D materials composed entirely of pentagonal atomic rings, are attracting increasing research attention. However, the existence of these 2D materials has not been proven experimentally until the recent discovery of PdSe2 . Herein, penta-PdPSe, a new 2D pentagonal material with a novel low-symmetry puckered pentagonal structure, is introduced to the 2D family. Interestingly, a peculiar polyanion of [SePPSe]4- is discovered in this material, which is the biggest polyanion in 2D materials yet discovered. Strong intrinsic in-plane anisotropic behavior endows penta-PdPSe with highly anisotropic optical, electronic, and optoelectronic properties. Impressively, few-layer penta-PdPSe-based phototransistor not only achieves excellent electronic performances, a moderate electron mobility of 21.37 cm2 V-1 s-1 and a high on/off ratio of up to 108 , but it also has a high photoresponsivity of ≈5.07 × 103 A W-1 at 635 nm, which is ascribed to the photogating effect. More importantly, penta-PdPSe also exhibits a large anisotropic conductance (σmax /σmax = 3.85) and responsivity (Rmax /Rmin = 6.17 at 808 nm), superior to most 2D anisotropic materials. These findings make penta-PdPSe an ideal material for the design of next-generation anisotropic devices.

Published
2021

14. Unexpected Giant Microwave Conductivity in a Nominally Silent BiFeO 3 Domain Wall

Author

Shang-Lin Hsu, Ying-Hao Chu, Ramamoorthy Ramesh, Lu Zheng, Tiannan Yang, Xiaoyu Wu, Sergey Artyukhin, Louis Ponet, Long Qing Chen, Xiaoxing Cheng, Yen Lin Huang, Peng Chen, and Keji Lai

Subjects
Materials science, Condensed matter physics, Oscillation, Mechanical Engineering, Direct current, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, Thermal conduction, 01 natural sciences, Ferroelectricity, 0104 chemical sciences, law.invention, Mechanics of Materials, law, Electric field, General Materials Science, 0210 nano-technology, Alternating current, Microwave, Excitation
Abstract

Nanoelectronic devices based on ferroelectric domain walls (DWs), such as memories, transistors, and rectifiers, have been demonstrated in recent years. Practical high-speed electronics, on the other hand, usually demand operation frequencies in the gigahertz (GHz) regime, where the effect of dipolar oscillation is important. Herein, an unexpected giant GHz conductivity on the order of 103 S m-1 is observed in certain BiFeO3 DWs, which is about 100 000 times greater than the carrier-induced direct current (dc) conductivity of the same walls. Surprisingly, the nominal configuration of the DWs precludes the alternating current (ac) conduction under an excitation electric field perpendicular to the surface. Theoretical analysis shows that the inclined DWs are stressed asymmetrically near the film surface, whereas the vertical walls in a control sample are not. The resultant imbalanced polarization profile can then couple to the out-of-plane microwave fields and induce power dissipation, which is confirmed by the phase-field modeling. Since the contributions from mobile-carrier conduction and bound-charge oscillation to the ac conductivity are equivalent in a microwave circuit, the research on local structural dynamics may open a new avenue to implement DW nano-devices for radio-frequency applications.

Published
2020

15. In Situ Back‐Contact Passivation Improves Photovoltage and Fill Factor in Perovskite Solar Cells

Author

Tan, Furui, primary, Tan, Hairen, additional, Saidaminov, Makhsud I., additional, Wei, Mingyang, additional, Liu, Mengxia, additional, Mei, Anyi, additional, Li, Peicheng, additional, Zhang, Bowen, additional, Tan, Chih‐Shan, additional, Gong, Xiwen, additional, Zhao, Yongbiao, additional, Kirmani, Ahmad R., additional, Huang, Ziru, additional, Fan, James Z., additional, Quintero‐Bermudez, Rafael, additional, Kim, Junghwan, additional, Zhao, Yicheng, additional, Voznyy, Oleksandr, additional, Gao, Yueyue, additional, Zhang, Feng, additional, Richter, Lee J., additional, Lu, Zheng‐Hong, additional, Zhang, Weifeng, additional, and Sargent, Edward H., additional

Published
2019
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17. Butylamine-Catalyzed Synthesis of Nanocrystal Inks Enables Efficient Infrared CQD Solar Cells

Author

Kim, Junghwan, primary, Ouellette, Olivier, additional, Voznyy, Oleksandr, additional, Wei, Mingyang, additional, Choi, Jongmin, additional, Choi, Min-Jae, additional, Jo, Jea Woong, additional, Baek, Se-Woong, additional, Fan, James, additional, Saidaminov, Makhsud I., additional, Sun, Bin, additional, Li, Peicheng, additional, Nam, Dae-Hyun, additional, Hoogland, Sjoerd, additional, Lu, Zheng-Hong, additional, García de Arquer, F. Pelayo, additional, and Sargent, Edward H., additional

Published
2018
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18. Activated Electron-Transport Layers for Infrared Quantum Dot Optoelectronics

Author

Choi, Jongmin, primary, Jo, Jea Woong, additional, de Arquer, F. Pelayo García, additional, Zhao, Yong-Biao, additional, Sun, Bin, additional, Kim, Junghwan, additional, Choi, Min-Jae, additional, Baek, Se-Woong, additional, Proppe, Andrew H., additional, Seifitokaldani, Ali, additional, Nam, Dae-Hyun, additional, Li, Peicheng, additional, Ouellette, Olivier, additional, Kim, Younghoon, additional, Voznyy, Oleksandr, additional, Hoogland, Sjoerd, additional, Kelley, Shana O., additional, Lu, Zheng-Hong, additional, and Sargent, Edward H., additional

Published
2018
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19. Chemically Addressable Perovskite Nanocrystals for Light‐Emitting Applications

Author

Sun, Haizhu, primary, Yang, Zhenyu, additional, Wei, Mingyang, additional, Sun, Wei, additional, Li, Xiyan, additional, Ye, Shuyang, additional, Zhao, Yongbiao, additional, Tan, Hairen, additional, Kynaston, Emily L., additional, Schon, Tyler B., additional, Yan, Han, additional, Lu, Zheng‐Hong, additional, Ozin, Geoffrey A., additional, Sargent, Edward H., additional, and Seferos, Dwight S., additional

Published
2017
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21. Highly Efficient Perovskite‐Quantum‐Dot Light‐Emitting Diodes by Surface Engineering

Author

Pan, Jun, primary, Quan, Li Na, additional, Zhao, Yongbiao, additional, Peng, Wei, additional, Murali, Banavoth, additional, Sarmah, Smritakshi P., additional, Yuan, Mingjian, additional, Sinatra, Lutfan, additional, Alyami, Noktan M., additional, Liu, Jiakai, additional, Yassitepe, Emre, additional, Yang, Zhenyu, additional, Voznyy, Oleksandr, additional, Comin, Riccardo, additional, Hedhili, Mohamed N., additional, Mohammed, Omar F., additional, Lu, Zheng Hong, additional, Kim, Dong Ha, additional, Sargent, Edward H., additional, and Bakr, Osman M., additional

Published
2016
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22. The In-Gap Electronic State Spectrum of Methylammonium Lead Iodide Single-Crystal Perovskites

Author

Adinolfi, Valerio, primary, Yuan, Mingjian, additional, Comin, Riccardo, additional, Thibau, Emmanuel S., additional, Shi, Dong, additional, Saidaminov, Makhsud I., additional, Kanjanaboos, Pongsakorn, additional, Kopilovic, Damir, additional, Hoogland, Sjoerd, additional, Lu, Zheng-Hong, additional, Bakr, Osman M., additional, and Sargent, Edward H., additional

Published
2016
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