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초록
A dye-sensitized solar cell (DSSC) containing a TiO2 film treated with COOH-functionalized germanium nanoparticles (Ge-COOH Nps) exhibited a higher short-circuit photocurrent density (J(sc); 15.4 mA cm(-2)) compared to the corresponding untreated DSSC (13.4 mA cm(-2)) using N719 and a 12 mu m thick TiO2 film at 100 mW cm(-2). The amount of N719 attached to the treated TiO2 film was 21% greater than that attached to the untreated TiO2 film. Enhancement of the J(sc) value by 15% was attributed mostly to an intramolecular charge transfer from N719 attached to the Ge-COOH Nps to the TiO2 conduction band through the Ge-COOH Nps.
키워드
charge transfer; dye-sensitized solar cells; germanium; nanoparticles; short-circuit photocurrent; SELF-ASSEMBLED LAYERS; QUANTUM DOTS; GE NANOCRYSTALS; VISIBLE PHOTOLUMINESCENCE; OPTICAL-PROPERTIES; SIZE; FILMS; CDSE; PHOTOSENSITIZATION; NANOCLUSTERS
- 제목
- Treatment of TiO2 with COOH-Functionalized Germanium Nanoparticles to Enhance the Photocurrent of Dye-Sensitized Solar Cells
- 저자
- Kim, Chang-Ho; Ha, Eun-Sung; Baik, Hionsuck; Kim, Kang-Jin
- 발행일
- 2011-03-01
- 유형
- Article
- 권
- 6
- 호
- 3
- 페이지
- 850 ~ 855