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Using Cyclic Voltammetry, UV-Vis-NIR, and EPR Spectroelectrochemistry to Analyze Organic Compounds

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Recent progress in photoactive organic field-effect transistors.

Yutaka Wakayama¹, Ryoma Hayakawa¹, Hoon-Seok Seo¹

¹International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, 305-0044, Japan.

Science and Technology of Advanced Materials

|November 24, 2016

Summary

This review covers advancements in photoactive organic field-effect transistors (OFETs), detailing improvements in light-emitting (LE) and light-receiving (LR) OFET device structures and functionalities.

Keywords:

Light-emitting transistor Optical memory Organic field-effect transistor Photochromism Phototransistor

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Area of Science:

Organic electronics
Semiconductor devices
Photonics

Background:

Photoactive organic field-effect transistors (OFETs) are crucial for optoelectronic applications.
Recent advancements have focused on enhancing device performance and exploring new functionalities.
Understanding the evolution of device structures is key to future developments.

Approach:

This review categorizes photoactive OFETs into light-emitting (LE) and light-receiving (LR) types.
It examines the evolution of device structures for LE-OFETs, from single-layer unipolar to multi-layer ambipolar transistors.
Various LR-OFET functionalities, including phototransistors, optical memories, and photochromic transistors, are discussed.

Key Points:

LE-OFET performance has significantly improved with advancements in device architectures over the past decade.
LR-OFETs are classified by function: phototransistors, non-volatile optical memories, and photochromism-based transistors.
Diverse device configurations, such as thin-film, single-crystalline, nanowire, multi-layer, and vertical transistors, are presented.

Conclusions:

The review highlights the progress in photoactive OFETs, emphasizing the impact of structural evolution on device performance.
It underscores the versatility of LR-OFETs and the potential of novel device configurations.
Future research directions in photoactive OFETs are implied through the discussion of various device concepts.