| 학회 |
한국화학공학회 |
| 학술대회 |
2012년 가을 (10/24 ~ 10/26, 부산 BEXCO) |
| 권호 |
18권 2호, p.1476 |
| 발표분야 |
고분자 |
| 제목 |
Flower-Like TiO2Nanospheres Directly from Block-Graft Copolymer Precursors and Their Uses in Quasi-solid-state Dye-sensitized Solar Cells |
| 초록 |
We report a lowtemperature synthetic method for preparing flower-like TiO2 nanospheres (f-TiO2 NS) directly from an amphiphilic block-graft copolymer precursor. The copolymer, consisting of poly(ethylene glycol) titanium triisopropoxide (PEGTTIP) and polystyrene (PS), was synthesized via atom transfer radical polymerization (ATRP) and was characterized by Fourier transform infrared (FT-IR) spectroscopy. The copolymer was directly hydrolyzed at 90 °C for 6 h without any additivesto generate rutile-phase f-TiO2 NS that were approximately 800 nm in size, as confirmed by field emission scanning electron microscopy (FE-SEM), energy-filtering transmission electron microscopy (EF-TEM) and X-ray diffraction (XRD). The energy conversion efficiency of quasi-solid-state dye-sensitized solar cells (qssDSSCs) fabricated with f-TiO2 NS (4.4 % at 100 mW/cm2) as a scattering layer (SL) was greater than those without f-TiO2NS (3.8% for 10 m, 3.9% for 17 m) and was quite comparable to cells with a commercial scattering layer (CSL). |
| 저자 |
서진아, Rajkumar Patel, 지원석, 김상진, 김동준, 정예은, 김종학
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| 소속 |
연세대 |
| 키워드 |
TiO2; copolymer; dye-sensitized solar cell
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| E-Mail |
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| 원문파일 |
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