The conversion of solar energy into hydrogen through photoelectrochemical (PEC) water splitting is an attractive way to store renewable energy. Despite the intriguing concept of solar hydrogen production, efficient PEC devices based on earth-abundant semiconductors should be realized to compete economically with conventional steam reforming processes. Herein, recent milestones in photocathode development for PEC water splitting, particularly in earth-abundant semiconductors, in terms of new techniques for enhancing performance, as well as theoretical aspects, are highlighted. In addition, recent research into newly emerging low-cost p-type semiconductors in the PEC field, such as Cu2BaSn(S,Se)4 and Sb2Se3, are scrutinized and the advantages and disadvantages of each material assessed.
Bibliographical noteFunding Information:
Jooho Moon is a professor in the De- partment of Materials Science and En- gineering at Yonsei University, Seoul, Republic of Korea. He holds MS and PhD degrees in materials science and engineering from the University of Florida. He conducted postdoctoral re- search in the Materials Processing Center at MIT from 1996 to 1998. He was awarded a Japan Society of the Promotion of Science (JSPS) fellowship in 1998. He joined the faculty at Yonsei University as Assistant Professor in 2000, and was promoted to Professor in 2009. His research interests include ink-jet printing of self-assembling colloids and functional nanoparticles, printed electronics and displays, solid oxide fuel cells, perovskite solar cells, and water splitting. He has co-authored more than 210 publications in peer-reviewed journals and he has also served as an associate editor of ACS Applied Materials & Interface since 2015.
This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Government of Korea (MSIP) (2012R1A3A2026417).
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All Science Journal Classification (ASJC) codes
- Environmental Chemistry
- Chemical Engineering(all)
- Materials Science(all)