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| 1 | Single‑Layer ZnO Hollow Hemispheres Enable High‑Performance Self‑Powered Perovskite Photodetector for Optical Communication显示文摘The carrier transport layer with reflection reduction morphology has attracted extensive attention for improving the utilization of light.Herein,we introduced single-layer hollow ZnO hemisphere arrays(ZHAs)behaving light trapping effect as the electron transport layer in perovskite photodetectors(PDs).The singlelayer hollow ZHAs can not only reduce the reflection,but also widen the angle of the effective incident light and especially transfer the distribution of the optical field from the ZnO/FTO interface to the perovskite active layer confirmed by the 3D finitedifference time-domain simulation.These merits benefit for the generation,transport and separation of carriers,improving the light utilization efficiency.Finally,our optimized FTO/ZHA/CsPbBr3/carbon structure PDs showed high self-powered performance with a linear dynamic range of 120.3 dB,a detectivity of 4.2×10^(12) Jones,rise/fall time of 13/28μs and the f_(−3) dB of up to 28 kHz.Benefiting from the high device performance,the PD was demonstrated to the application in the directional transmission of encrypted files as the signal receiving port with super high accuracy.This work uniquely utilizes the features of high-performance self-powered perovskite PDs in optical communication,paving the path to wide applications of all-inorganic perovskite PDs. | Xiyan Pan Jianqiang Zhang Hai Zhou Ronghuan Liu Dingjun Wu Rui Wang Liangping Shen Li Tao Jun Zhang Hao Wang | 2021 | Nano-Micro Letters2021，13，4： | 3 |
| 2 | Star perovskite materials显示文摘Nowadays,perovskite materials become research hot-spots with the soar of the power conversion efficiency(PCE)for perovskite solar cells.Specifically,metal halide per-ovskites(MHPs),with the formula ABX_(3)(A=CH_(3)NH_(3)^(+)(MA^(+)),CH(NH_(2))_(2)^(+)(FA^(+)),Cs^(+),etc.;B=Pb^(2+)or Sn^(2+);and X=I^(-),Cl^(-)and/or Br^(-)),have become star materials in optoelectronics.MHPs present favorable optoelectronic properties,like high absorption coefficient in visible range,long carrier diffusion length,high defect tolerance,and superior optical gain in a wide wavelength range.These merits gift MHPs promising potential in optoelectronic application,including solar cells,light-emitting diodes,photodetectors and lasers.This article introduces the star perovskite materials in milestone works and highlights the best-performing materials in respective op-toelectronic application. | Lixiu Zhang Xiyan Pan Ling Liu Liming Ding | 2022 | Journal of Semiconductors2022，43，3： | 1 |
| 3 | Perovskite films with gradient bandgap for self-powered multiband photodetectors and spectrometers显示文摘Bandgap-graded materials present varying spectral responses at different positions,making them possible to be used as an alternative to photoactive materials array in multi-spectral responsive devices,thus miniaturizing the apparatus.However,the preparation of bandgap-graded materials usually requires complicated deposition process.Here we report a facile lowtemperature solution process to make films with lateral bandgap gradients,which form spontaneously via self-spreading and interdiffusion of solutions.We show lead halide perovskite films with MAPbCl_(3)-MAPbBr_(3)and MAPbBr_(3)-MAPbI_(3)gradients,which exhibit light absorption onsets ranging from 410 to 781 nm.The bandgap-graded films were used to make self-powered multiband photodetectors,which show different spectral responses at different positions without applying bias voltage.Furthermore,self-powered spectrometers were made by using the multiband photodetectors. | Chuantian Zuo Lixiu Zhang Xiyan Pan He Tian Keyou Yan Yuanhang Cheng Zhiwen Jin Chenyi Yi Xiaoliang Zhang Wu-Qiang Wu Qinye Bao Liyuan Han Liming Ding | 2023 | Nano Research2023，16，7： | 1 |
| 4 | Trust,relationship commitment and cooperative performance:supply chain management显示文摘 | Yuchun Xiao Xiyan Zheng Wenan Pan Xiaoxia Xie | | 0，，03： | 1 |
| 5 | Application of metal halide perovskite photodetectors显示文摘In recent years,metal halide perovskite materials have attracted wide attention in the fields of photovoltaics(PVs),light-emitting diodes(LEDs)and photodetectors(PDs)due to their excellent light absorption[1-6],adjustable bandgaps and long carrier diffusion length.Compared with commercial Si and GaN photodetectors,perovskite photodetectors(PPDs)present wider light detection range,higher sensitivity and higher external quantum efficiency(EQE)[7-9]. | Xiyan Pan Liming Ding | 2022 | Journal of Semiconductors2022，43，2： | 1 |
| 6 | A Class of Constrained Inverse Eigenproblem and Associated Approximation Problem for Symmetric Reflexive Matrices显示文摘Let S∈Rn×n be a symmetric and nontrival involution matrix. We say that A∈E R n×n is a symmetric reflexive matrix if AT = A and SAS = A. Let S R r n×n(S)={A|A= AT,A = SAS, A∈Rn×n}. This paper discusses the following two problems. The first one is as follows. Given Z∈Rn×m (m < n),∧= diag(λ1,...,λm)∈Rm×m, andα,β∈R withα<β. Find a subset (?)(Z,∧,α,β) of SRrn×n(S) such that AZ = Z∧holds for any A∈(?)(Z,∧,α,β) and the remaining eigenvaluesλm+1 ,...,λn of A are located in the interval [α,β], Moreover, for a given B∈Rn×n, the second problem is to find AB∈(?)(Z,∧,α,β) such that where ||.|| is the Frobenius norm. Using the properties of symmetric reflexive matrices, the two problems are essentially decomposed into the same kind of subproblems for two real symmetric matrices with smaller dimensions, and then the expressions of the general solution for the two problems are derived. | Xiaoping Pan Xiyan Hu Lei Zhang | 2006 | Numerical Mathematics A Journal of Chinese Universities(English Series)2006，15，3： | 1 |
| 7 | Advances in the Application of Perovskite Materials显示文摘Nowadays, the soar of photovoltaic performance of perovskite solar cells has set off a fever in the study of metal halide perovskite materials. The excellent optoelectronic properties and defect tolerance feature allow metal halide perovskite to be employed in a wide variety of applications. This article provides a holistic review over the current progress and future prospects of metal halide perovskite materials in representative promising applications, including traditional optoelectronic devices(solar cells, light-emitting diodes, photodetectors, lasers), and cutting-edge technologies in terms of neuromorphic devices(artificial synapses and memristors) and pressure-induced emission. This review highlights the fundamentals, the current progress and the remaining challenges for each application, aiming to provide a comprehensive overview of the development status and a navigation of future research for metal halide perovskite materials and devices. | Lixiu Zhang Luyao Mei Kaiyang Wang Yinhua Lv Shuai Zhang Yaxiao Lian Xiaoke Liu Zhiwei Ma Guanjun Xiao Qiang Liu Shuaibo Zhai Shengli Zhang Gengling Liu Ligang Yuan Bingbing Guo Ziming Chen Keyu Wei Aqiang Liu Shizhong Yue Guangda Niu Xiyan Pan Jie Sun Yong Hua Wu‑Qiang Wu Dawei Di Baodan Zhao Jianjun Tian Zhijie Wang Yang Yang Liang Chu Mingjian Yuan Haibo Zeng Hin‑Lap Yip Keyou Yan Wentao Xu Lu Zhu Wenhua Zhang Guichuan Xing Feng Gao Liming Ding | 2023 | Nano-Micro Letters2023，15，10： | 0 |
| 8 | Ultrasensitive,flexible perovskite nanowire photodetectors with long-term stability exceeding 5000 h显示文摘Photodetectors(PDs)based on perovskite nanowires are among the most promising next-generation photodetection technologies;however,their poor long-term stability is the biggest challenge limiting their commercial applica-tion.Herein,an ionic liquid,1-butyl-3 methylimidazolium tetrafuoroborate(BMIMBF_(4)),is incorporated as an additive into methylammonium lead tri-iodide(MAPbI_(3))nanowires;this not only effectively passivates defects to inhibit perovskite degradation but also leads to the formation of nanochannels,enabling fast charge transfer.As a result,the long-term stability and perfor-mance of MAPbI_(3)nanowires are considerably improved.The detectivity,linear detection range,and noise equivalent power of the MA PbI_(3)nanowire PD reach 2.06×10^(13)Jones,160dB,and 1.38×10^(-15)W Hz-^(1/2),respectively,compara-ble to the highest performance of perovskite nanowire PDs reported to date.Moreover,the unencapsulated PD can maintain 100%of its initial performance after being exposed to an open-air environment for more than 5000 h,esta-blishing it as the most stable perovskite nanowire PD reported to date.Nota-bly,the PD exhibits improved diffuse reflection imaging ability when compared with commercial silicon photodiode S2386.This study provides a new strategy for constructing sensitive,stable,and flexible perovskite PDs and will accelerate their commercial application in the future. | Dingjun Wu Yongchang Xu Hai Zhou Xin Feng Jianqiang Zhang Xiyan Pan Zheng Gao Rui Wang Guokun Ma Li Tao Hanbin Wang Jinxia Duan Houzhao Wan Jun Zhang Liangping Shen Hao Wang Tianyou Zhai | 2022 | InfoMat2022，4，9： | 0 |
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