| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
[고분자] 자가치유 및 생체/자연모사 첨단 고분자 소재 |
| 제목 |
Two-photon tandem photoanode with black phosphorus quantum dot-sensitized BiVO4 for solar water splitting |
| 초록 |
The photoelectrochemical water splitting efficiency has been profoundly restricted by the limited light harvesting, rapid charge recombination and sluggish water oxidation kinetics for a long time. Herein, tailored black phosphorus quantum dots (BPQDs) with great light absorbability up to the near-infrared region (NIR) sensitizes visible light well-responsive BiVO4 photoanodes to demonstrate a two-photon absorption tandem photoanode with a P/N heterojunction interface with a prolonged hole lifetime. A subsequent TiO2 overlayer significantly improves the stability of the BiVO4/BPQDs and eliminates the surface trap state to enhance charge separation. The wisely designed BiVO4/BPQDs/OL-OEC with multiple components, each with definite functions, achieves a photocurrent of 5.3 mA/cm2 at 1.23 V vs. RHE under AM 1.5 illumination, offering reference for achieving efficient solar-to-fuel conversion devices by combining photosensitizer and passivation layer. |
| 저자 |
박종혁 |
| 소속 |
연세대 |
| 키워드 |
water oxidation; black phosphorus quantum dots (BPQDs); near-infrared region (NIR); joint effects
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| E-Mail |
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