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遥感技术在环境监测中的应用进展与思考
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作者 王文俊 《科技创新导报》 2022年第11期80-82,共3页
随着我国社会发展逐步完善,环境压力也在不断加重,面临很多外界因素的影响,导致城市环境不尽人意,影响人们日常生活。科学使用遥感技术对环境进行有效监测,按照环境变化实现稳定发展,对环境起到良好保护作用。遥感技术是新兴技术,在很... 随着我国社会发展逐步完善,环境压力也在不断加重,面临很多外界因素的影响,导致城市环境不尽人意,影响人们日常生活。科学使用遥感技术对环境进行有效监测,按照环境变化实现稳定发展,对环境起到良好保护作用。遥感技术是新兴技术,在很多领域中被广泛运用,同时也为生态环境保护提供了技术支持,可以更好地监测环境,从而切实避免环境污染的发生。随着我国不断发展与进步,人们意识到生态环境的重要性,必须加强关注和保护生态环境,并将其与国家可持续发展战略相结合,全面落实到每个环境管理部门当中。本文主要介绍了遥感技术,深入分析遥感技术在环境监测中的应用情况,从多方面提出相关建议,为以后城市生态环境遥感监测工作顺利展开提供帮助。 展开更多
关键词 遥感技术 环境监测 应用 思考
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Ultrasensitive,flexible perovskite nanowire photodetectors with long-term stability exceeding 5000 h 被引量:3
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作者 Dingjun Wu Yongchang Xu +14 位作者 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 《InfoMat》 SCIE CAS 2022年第9期85-96,共12页
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 appli... 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. 展开更多
关键词 diffuse rflction imaging FLEXIBLE ionic liquids long-term stability perovskite nanowire photodetectors
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