| 학회 |
한국재료학회 |
| 학술대회 |
2017년 봄 (05/17 ~ 05/19, 목포 현대호텔) |
| 권호 |
23권 1호 |
| 발표분야 |
C. 에너지 재료 분과 |
| 제목 |
Strategies for Enhancing Solar Water Splitting Performance of TiO2 Nanorods Arrays: A Case of Doping and Nanoparticles sensitization |
| 초록 |
We report the rational design and fabrication of earth-abundant, visible-light absorbing Cu2ZnSnS4 (CZTS) nanoparticles (NPs)-sensitized S-doped TiO2 nanoarchitectures for high-efficiency solar water splitting. Our systematic studies reveal that these nanoarchitectures significantly enhance the visible-light photoactivity compared to that of TiO2, S-doped TiO2 and CZTS NPs-sensitized TiO2. Detailed photoelectrochemical (PEC) studies demonstrate an unprecedented enhancement in the photocurrent density and incident photon-to-electron conversion efficiency (IPCE). This enhancement is attributed to the significantly improved visible-light absorption and more efficient charge separation and transfer/transport, resulting from the synergistic influence of CZTS NPs sensitization and S doping, which were confirmed by electrochemical impedance spectroscopy (EIS). This work demonstrates the novel rational design and fabrication of nanoarchitectures via band edge engineering for improving the PEC performance using simultaneous earth-abundant CZTS NPs sensitization and S doping. This work also provides useful insight for the further development of novel nanoarchitectures using similar combinations for energy harvesting related applications |
| 저자 |
Mahesh Suryawanshi1, Jin Hyeok Kim2
|
| 소속 |
1Optoelectronics Convergence Research Center and Department of Materials Science and Engineering, 2Chonnam National Univ. |
| 키워드 |
Enhanced solar water-splitting performance; 1D nanoarchitectures; band edge engineering of TiO2; earth-abundant Cu2ZnSnS4 nanoparticles sensitization; charge separation and transport/transfer properties
|
| E-Mail |
|
