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Yang, Changduk
Advanced Tech-Optoelectronic Materials Synthesis Lab (ATOMS)
Research Interests
  • Optoelectronic materials synthesis/organic electronics, functionalization of carbonaceous solids, advanced materials chemistry, macromolecular chemistry

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High-performance and stable photoelectrochemical water splitting cell with organic-photoactive-layer-based photoanode

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Title
High-performance and stable photoelectrochemical water splitting cell with organic-photoactive-layer-based photoanode
Author
Yu, Je MinLee, JunghoKim, Yoon SeoSong, JaejungOh, JiyeonLee, Sang MyeonJeong, Mingyu.Kim, YongseonKwak, Ja HunCho, SeunghoYang, ChangdukJang, Ji-Wook
Issue Date
2020-11
Publisher
Nature Research
Citation
NATURE COMMUNICATIONS, v.11, no.1, pp.5509
Abstract
Considering their superior charge-transfer characteristics, easy tenability of energy levels, and low production cost, organic semiconductors are ideal for photoelectrochemical (PEC) hydrogen production. However, organic-semiconductor-based photoelectrodes have not been extensively explored for PEC water-splitting because of their low stability in water. Herein, we report high-performance and stable organic-semiconductors photoanodes consisting of p-type polymers and n-type non-fullerene materials, which is passivated using nickel foils, GaIn eutectic, and layered double hydroxides as model materials. We achieve a photocurrent density of 15.1 mA cm−2 at 1.23 V vs. reversible hydrogen electrode (RHE) with an onset potential of 0.55 V vs. RHE and a record high half-cell solar-to-hydrogen conversion efficiency of 4.33% under AM 1.5 G solar simulated light. After conducting the stability test at 1.3 V vs. RHE for 10 h, 90% of the initial photocurrent density are retained, whereas the photoactive layer without passivation lost its activity within a few minutes. © 2020, The Author(s).
URI
https://scholarworks.unist.ac.kr/handle/201301/48764
URL
https://www.nature.com/articles/s41467-020-19329-0
DOI
10.1038/s41467-020-19329-0
ISSN
2041-1723
Appears in Collections:
ECHE_Journal Papers
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