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Two-step vapor deposition of self-catalyzed large-size PbI2 nanobelts for high-performance photodetectors

文献类型：期刊论文

作者Han, Mingming1,2; Sun, Jiamin1,2,3; Bian, Luozhen1,2,3; Wang, Zhou4; Zhang, Lei5; Yin, Yanxue1,2; Gao, Zhaofeng1,2; Li, Fulin1,2; Xin, Qian1,2; He, Longbin5
刊名JOURNAL OF MATERIALS CHEMISTRY C
出版日期2018-06-07
卷号6期号:21页码:5746-5753
ISSN号2050-7526
DOI10.1039/c8tc01180j
英文摘要The grown lead iodide (PbI2) is usually a two-dimensional sheet with a finite size which necessitates sophisticated device metallization and the growth of quasi one-dimensional materials is still challenging. In this work, large-size (length 4 100 mm), single-crystalline and high-density PbI2 nanobelts are successfully synthesized by manipulating the microenvironment in a two-step vapor deposition process at a slow heating rate of B18 1C min 1. Firstly, PbI2 nanosheet seeds are grown by physical vapor deposition, and then PbI2 nanobelts are synthesized by a self-catalyzed vapor-liquid-solid growth mechanism, which is verified by the Pb nanoparticles on the nanobelt tips. Photoluminescence and ultraviolet-visible spectra show the uniform high-quality crystallinity of the as-prepared large-size PbI2 nanobelts with a bandgap of 2.36 eV. When configured into photodetectors with a shadow mask, the fabricated device exhibits a low dark current of 4 pA, an impressive ON/ OFF current ratio of 103-104, a photoresponsivity of 13 mA W 1, and a fast response with the rise and decay time constants of 425 and 41 ms, respectively. All these performances are comparable to those of state-of-the-art layered PbI2 nanostructure photodetectors, but the ease of synthesizing large-size PbI2 nanobelts may have a useful impact on next-generation easily-fabricated high-performance optoelectronics.
WOS关键词TRANSITION-METAL DICHALCOGENIDES ; FIELD-EFFECT-TRANSISTORS ; SINGLE-CRYSTALS ; FLEXIBLE PHOTODETECTORS ; 2-DIMENSIONAL MATERIALS ; LEAD IODIDE ; GRAPHENE ; PEROVSKITES ; NANOWIRES ; GROWTH
资助项目National Key R&D Program of China[2017YFA0305500] ; Shandong Provincial Natural Science Foundation, China[ZR2017MF037] ; Science Technology and Innovation Committee of Shenzhen Municipality[JCYJ20170307093131123] ; "Qilu young scholar'' program of Shandong University ; National Natural Science Foundation of China[51602314] ; National Natural Science Foundation of China[61504151] ; CAS-CSIRO project of the Bureau of International Co-operation of the Chinese Academy of Sciences[122111KYSB20150064]
WOS研究方向Materials Science ; Physics
语种英语
WOS记录号WOS:000434260700021
出版者ROYAL SOC CHEMISTRY
资助机构National Key R&D Program of China ; Shandong Provincial Natural Science Foundation, China ; Science Technology and Innovation Committee of Shenzhen Municipality ; "Qilu young scholar'' program of Shandong University ; National Natural Science Foundation of China ; CAS-CSIRO project of the Bureau of International Co-operation of the Chinese Academy of Sciences
源URL[http://ir.ipe.ac.cn/handle/122111/24608]  
专题中国科学院过程工程研究所
通讯作者Han, Ning; Yang, Zai-xing
作者单位1.Shandong Univ, Ctr Nanoelect, Jinan 250100, Shandong, Peoples R China
2.Shandong Univ, Sch Microelect, Jinan 250100, Shandong, Peoples R China
3.Shandong Univ, Shenzhen Res Inst, Shenzhen 518057, Peoples R China
4.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
5.Southeast Univ, Collaborat Innovat Ctr Micro Nano Fabricat Device, SEU FEI Nanopico Ctr, Key Lab MEMS,Minist Educ, Nanjing 210096, Jiangsu, Peoples R China
推荐引用方式
GB/T 7714		 Han, Mingming,Sun, Jiamin,Bian, Luozhen,et al. Two-step vapor deposition of self-catalyzed large-size PbI2 nanobelts for high-performance photodetectors[J]. JOURNAL OF MATERIALS CHEMISTRY C,2018,6(21):5746-5753.
APA Han, Mingming.,Sun, Jiamin.,Bian, Luozhen.,Wang, Zhou.,Zhang, Lei.,...&Yang, Zai-xing.(2018).Two-step vapor deposition of self-catalyzed large-size PbI2 nanobelts for high-performance photodetectors.JOURNAL OF MATERIALS CHEMISTRY C,6(21),5746-5753.
MLA Han, Mingming,et al."Two-step vapor deposition of self-catalyzed large-size PbI2 nanobelts for high-performance photodetectors".JOURNAL OF MATERIALS CHEMISTRY C 6.21(2018):5746-5753.

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来源：过程工程研究所

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