Retarded Charge-Carrier Recombination in Photoelectrochemical Cells from Plasmon-Induced Resonance Energy Transfer
- 주제(키워드) 2D pattern array , gold nanospheres , metal oxide photoanodes , solar water splitting
- 주제(기타) Chemistry, Physical
- 주제(기타) Energy & Fuels
- 주제(기타) Materials Science, Multidisciplinary
- 주제(기타) Physics, Applied
- 주제(기타) Physics, Condensed Matter
- 설명문(일반) [Choi, Young Moon; Jung, Myung Sun; Park, Jong Hyeok] Yonsei Univ, Dept Chem & Biomol Engn, 50 Yonsei Ro, Seoul 03722, South Korea; [Lee, Byoung Wan; Yi, Gi-Ra; Kim, Jung Kyu] Sungkyunkwan Univ SKKU, Sch Chem Engn, 2066 Seobu Ro, Suwon 16419, South Korea; [Han, Hyun Soo] Stanford Univ, Dept Mech Engn, Stanford, CA 94305 USA; [Kim, Suk Hyun; Heinz, Tony F.] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA; [Kim, Suk Hyun; Heinz, Tony F.] SLAC Natl Accelerator Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA; [Chen, Kaifeng; Fan, Shanhui] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA; [Kim, Dong Ha] Ewha Womans Univ, Dept Chem & Nano Sci, 52 Ewhayeodae Gil, Seoul 03760, South Korea; [Lee, Jihye] Korea Inst Machinery & Mat, Dept Nanomfg Technol, Daejeon, South Korea
- 등재 SCIE, SCOPUS
- OA유형 Green Submitted
- 발행기관 WILEY-V C H VERLAG GMBH
- 발행년도 2020
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000175758
- 본문언어 영어
- Published As http://dx.doi.org/10.1002/aenm.202000570
초록/요약
N-type metal oxides such as hematite (alpha-Fe2O3) and bismuth vanadate (BiVO4) are promising candidate materials for efficient photoelectrochemical water splitting; however, their short minority carrier diffusion length and restricted carrier lifetime result in undesired rapid charge recombination. Herein, a 2D arranged globular Au nanosphere (NS) monolayer array with a highly ordered hexagonal hole pattern (hereafter, Au array) is introduced onto the surface of photoanodes comprised of metal oxide films via a facile drying and transfer-printing process. Through plasmon-induced resonance energy transfer, the Au array provides a strong electromagnetic field in the near-surface area of the metal oxide film. The near-field coupling interaction and amplification of the electromagnetic field suppress the charge recombination with long-lived photogenerated holes and simultaneously enhance the light harvesting and charge transfer efficiencies. Consequently, an over 3.3-fold higher photocurrent density at 1.23 V versus reversible hydrogen electrode (RHE) is achieved for the Au array/alpha-Fe2O3. Furthermore, the high versatility of this transfer printing of Au arrays is demonstrated by introducing it on the molybdenum-doped BiVO4 film, resulting in 1.5-fold higher photocurrent density at 1.23 V versus RHE. The tailored metal film design can provide a potential strategy for the versatile application in various light-mediated energy conversion and optoelectronic devices.
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