Abstract
Synthesis of one-dimensional nanostructured chalcogenide compounds using nontoxic and abundant constituents provides an important pathway to the development of commercially feasible photoelectrochemical water splitting. In this study, grass-like Sb 2 Se 3 nanoneedle arrays are successfully fabricated on a substrate via a facile spin-coating method without any complicated processes such as templating, seed formation, or use of a vapor phase. Preferential [001] growth of the initial single-crystalline Sb 2 Se 3 occurs during the first spin-coating, but interfacial defects are generated upon subsequent spin-coating iterations, resulting in annual-ring-like growth of Sb 2 Se 3 nanoneedles. After sequential surface modification with TiO 2 and Pt, the resistance to charge transfer from the photoelectrode to the electrolyte decreases significantly, yielding a remarkable record-high photocurrent of 2 mA cm -2 at 0 V RHE (4.5 mA cm -2 at -0.2 V RHE ).
| Original language | English |
|---|---|
| Pages (from-to) | 2180-2187 |
| Number of pages | 8 |
| Journal | Journal of Materials Chemistry A |
| Volume | 5 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2017 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
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Self-oriented Sb 2 Se 3 nanoneedle photocathodes for water splitting obtained by a simple spin-coating method . / Kim, Jimin; Yang, Wooseok; Oh, Yunjung; Lee, Hyungsoo; Lee, Seonhee; Shin, Hyunjung; Kim, Joosun; Moon, Joo Ho.
In: Journal of Materials Chemistry A, Vol. 5, No. 5, 01.01.2017, p. 2180-2187.Research output: Contribution to journal › Article
TY - JOUR
T1 - Self-oriented Sb 2 Se 3 nanoneedle photocathodes for water splitting obtained by a simple spin-coating method
AU - Kim, Jimin
AU - Yang, Wooseok
AU - Oh, Yunjung
AU - Lee, Hyungsoo
AU - Lee, Seonhee
AU - Shin, Hyunjung
AU - Kim, Joosun
AU - Moon, Joo Ho
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Synthesis of one-dimensional nanostructured chalcogenide compounds using nontoxic and abundant constituents provides an important pathway to the development of commercially feasible photoelectrochemical water splitting. In this study, grass-like Sb 2 Se 3 nanoneedle arrays are successfully fabricated on a substrate via a facile spin-coating method without any complicated processes such as templating, seed formation, or use of a vapor phase. Preferential [001] growth of the initial single-crystalline Sb 2 Se 3 occurs during the first spin-coating, but interfacial defects are generated upon subsequent spin-coating iterations, resulting in annual-ring-like growth of Sb 2 Se 3 nanoneedles. After sequential surface modification with TiO 2 and Pt, the resistance to charge transfer from the photoelectrode to the electrolyte decreases significantly, yielding a remarkable record-high photocurrent of 2 mA cm -2 at 0 V RHE (4.5 mA cm -2 at -0.2 V RHE ).
AB - Synthesis of one-dimensional nanostructured chalcogenide compounds using nontoxic and abundant constituents provides an important pathway to the development of commercially feasible photoelectrochemical water splitting. In this study, grass-like Sb 2 Se 3 nanoneedle arrays are successfully fabricated on a substrate via a facile spin-coating method without any complicated processes such as templating, seed formation, or use of a vapor phase. Preferential [001] growth of the initial single-crystalline Sb 2 Se 3 occurs during the first spin-coating, but interfacial defects are generated upon subsequent spin-coating iterations, resulting in annual-ring-like growth of Sb 2 Se 3 nanoneedles. After sequential surface modification with TiO 2 and Pt, the resistance to charge transfer from the photoelectrode to the electrolyte decreases significantly, yielding a remarkable record-high photocurrent of 2 mA cm -2 at 0 V RHE (4.5 mA cm -2 at -0.2 V RHE ).
UR - http://www.scopus.com/inward/record.url?scp=85011270535&partnerID=8YFLogxK
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U2 - 10.1039/c6ta09602f
DO - 10.1039/c6ta09602f
M3 - Article
AN - SCOPUS:85011270535
VL - 5
SP - 2180
EP - 2187
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 5
ER -