化学
电阻率和电导率
金属
电导率
带隙
流离失所(心理学)
分析化学(期刊)
二进制数
活化能
结晶学
物理化学
材料科学
光电子学
有机化学
电气工程
工程类
算术
数学
心理治疗师
心理学
作者
Tianyang Chen,Jin‐Hu Dou,Luming Yang,Chenyue Sun,Nicole J. Libretto,Grigorii Skorupskii,Jeffrey T. Miller,Mircea Dincă
摘要
We report on the continuous fine-scale tuning of band gaps over 0.4 eV and of the electrical conductivity of over 4 orders of magnitude in a series of highly crystalline binary alloys of two-dimensional electrically conducting metal–organic frameworks M3(HITP)2 (M = Co, Ni, Cu; HITP = 2,3,6,7,10,11-hexaiminotriphenylene). The isostructurality in the M3(HITP)2 series permits the direct synthesis of binary alloys (MxM′3–x)(HITP)2 (MM′ = CuNi, CoNi, and CoCu) with metal compositions precisely controlled by precursor ratios. We attribute the continuous tuning of both band gaps and electrical conductivity to changes in free-carrier concentrations and to subtle differences in the interlayer displacement or spacing, both of which are defined by metal substitution. The activation energy of (CoxNi3–x)(HITP)2 alloys scales inversely with an increasing Ni percentage, confirming thermally activated bulk transport.
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