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GaN를 이용한 광전기화학적 물분해

Photoelectrochemical Water Splitting Using GaN

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주제분류화학

초록

본 총설은 질화 갈륨(GaN)을 이용한 광전기화학적 물분해 연구에 대해 정리하였다. GaN는 화학적으로 안정하고 에너지 띠간격 조절이 자유롭다는 장점으로 최근 물분해를 위한 새로운 광전극 물질로 연구되고 있다. 다른 화합물 반도체 물질은 강산 혹은 강염기 전해액에 의해 쉽게부식되기 때문에 광산화전극(photoanode)으로는 사용이 어려운 반면, n형 GaN는 뛰어난 안정성덕분에 산화 분위기의 산소 발생 전극으로도 활용이 가능하다. 또한, 최근에는 p형 GaN을 환원전극으로 이용한 광전극에 대한 연구도 보고되었다. GaN 물질이 실제 응용되기 위해 필요한 과제들에 대해 다루었다

Abstract

This review article summarizes photoelectrochemical water splitting using galliumnitride (GaN). GaN materials have been studied as novel photoelectrode material due to itschemical stability and easy band gap engineering. Unlike other semiconductor materials thatare easily corroded in strongly acidic or alkaline electrolyte, n-type GaN is chemically stableenough to be used as photoanode in oxygen evolution reaction. Furthermore, studies on p-typeGaN have been recently reported. This review briefly discusses problems that need to be solvedbefore GaN materials find widespread use in solar fuel application.

참고문헌 (21)

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