UV-vis/X-ray/thermo-induced synthesis and UV–SWIR photoresponsive property of a mixed-valence viologen molybdate semiconductor
Peng-Hao Wang, Cao-Ming Yu, Xiaoqing Yu, Ming‐Sheng Wang, Guo‐Cong Guo
Abstract
A new design strategy through the synergy of Mo(vi)-Mo(v) intervalence charge transfer and π(radical)-π(radical/cation) interactions is proposed to obtain semiconductors with photoresponsive ranges covering the whole UV-SWIR (ultraviolet-shortwave near-infrared; ca. 250-3000 nm) region. With this strategy, a viologen-based molybdate semiconductor with a UV-SWIR photoresponsive range was obtained through UV/X-ray irradiation or thermal annealing. The thermally annealed semiconductor has the highest conversion and the best photocurrent response in the range of 355-2400 nm.
Topics & Concepts
ViologenSemiconductorValence (chemistry)PhotochemistryChemistryMolybdateValence bandVisible spectrumOptoelectronicsMaterials scienceInorganic chemistryOrganic chemistryBand gapMetal-Organic Frameworks: Synthesis and ApplicationsPerovskite Materials and ApplicationsPolyoxometalates: Synthesis and Applications