Journal
ADVANCED MATERIALS
Volume 35, Issue 4, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202203401
Keywords
molecular switches; multifunctionalities; optoelectronics; semiconductors; solution processes
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Recent improvements in solution-processed semiconductor materials and optoelectronic devices have led to a growing interest in diversifying and advancing their functionality. This review focuses on the embedding of molecular switches in semiconductors, which can transition between different isomers upon light stimuli, allowing for multifunctionality in optoelectronic devices. The review classifies the mechanisms of each optoelectronic transition driven by molecular switches, regardless of the type of semiconductor material or switch. It also discusses the basic characteristics of molecular switches and the persistent technical and scientific issues associated with each mechanism.
Recent improvements in the performance of solution-processed semiconductor materials and optoelectronic devices have shifted research interest to the diversification/advancement of their functionality. Embedding a molecular switch capable of transition between two or more metastable isomers by light stimuli is one of the most straightforward and widely accepted methods to potentially realize the multifunctionality of optoelectronic devices. A molecular switch embedded in a semiconductor can effectively control various parameters such as trap-level, dielectric constant, electrical resistance, charge mobility, and charge polarity, which can be utilized in photoprogrammable devices including transistors, memory, and diodes. This review classifies the mechanism of each optoelectronic transition driven by molecular switches regardless of the type of semiconductor material or molecular switch or device. In addition, the basic characteristics of molecular switches and the persisting technical/scientific issues corresponding to each mechanism are discussed to help researchers. Finally, interesting yet infrequently reported applications of molecular switches and their mechanisms are also described.
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