标题:Tellurium-Based Double Perovskites A(2)TeX(6) with Tunable Band Gap and Long Carrier Diffusion Length for Optoelectronic Applications
作者:Ju, Dianxing; Zheng, Xiaopeng; Yin, Jun; Qiu, Zhiwen; Turedi, Bekir; Liu, Xiaolong; Dang, Yangyang; Cao, Bingqiang; Mohammed, Omar F.; 更多
作者机构:[Ju, Dianxing; Liu, Xiaolong; Dang, Yangyang; Tao, Xutang] Shandong Univ, State Key Lab Crystal Mat, 27 Shanda South Rd, Jinan 250100, Shandong, Peopl 更多
通讯作者:Cao, Bingqiang;Tao, XT;Tao, XT;Bakr, OM;Bakr, OM;Cao, BQ;Cao, BQ;Cao, BQ
通讯作者地址:[Tao, XT]Shandong Univ, State Key Lab Crystal Mat, 27 Shanda South Rd, Jinan 250100, Shandong, Peoples R China;[Tao, XT]Shandong Univ, Inst Crystal Ma 更多
来源:ACS ENERGY LETTERS
出版年:2019
卷:4
期:1
页码:228-234
DOI:10.1021/acsenergylett.8b02113
摘要:Lead-free hybrid perovskites have attracted immense interest as environmentally friendly light absorbers. Here, we report on tellurium (Te)-based double perovskites A(2)TeX(6) (A = MA, FA, or BA; X = Br- or I-; MA = CH3NH3; FA = CH(NH2)(2); BA = benzylamine) as potentially active materials for optoelectronic devices. These perovskites exhibit a tunable band gap (1.42-2.02 eV), a low trap density (similar to 10(10) cm(-3)), and a high mobility (similar to 65 cm(2) V-1 s(-1)). Encouragingly, the MA(2)TeBr(6) single crystal with a band gap of 2.00 eV possesses a long carrier lifetime of similar to 6 mu s and corresponding carrier diffusion lengths of similar to 38 mu m, which are ideal characteristics for a material for photodetectors and tandem solar cells. Moreover, A(2)TeX(6) perovskites are relatively robust in ambient conditions, being stable for at least two months without showing any signs of phase change. Our findings bring to the forefront a family of lead-free Te-based perovskites for nontoxic perovskite optoelectronics.
收录类别:EI;SCOPUS;SCIE
Scopus被引频次:1
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85058802515&doi=10.1021%2facsenergylett.8b02113&partnerID=40&md5=39b77e51e5ccecba7d3d17c0c787e44c
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