| 학회 |
한국화학공학회 |
| 학술대회 |
2013년 봄 (04/24 ~ 04/26, 광주 김대중컨벤션센터) |
| 권호 |
19권 1호, p.80 |
| 발표분야 |
고분자 |
| 제목 |
Electrostatically Assembled Nickel Sulfide Nanoparticles for Pt-free Counter Electrode of Dye-sensitized Solar Cells |
| 초록 |
In this study, we synthesized nickel sulfide nanoparticles with two different atomic ratios and morphologies via wet-chemistry for the application to Pt-free counter electrode of dye-sensitized solar cells (DSSCs). EDX analysis shows that Ni3S2 and NiS were successfully synthesized. Zeta potential of NiS was +28.4mV in ethanol solution which is much higher than the Ni3S2 (+11.3mV). Nickel sulfide nanoparticles (NiS) with highly positive surface charge more effectively attached to the negatively charged FTO glass via electrostatic interaction than that of Ni3S2. As a result, loading of NiS nanoparticles (0.02mg cm-2) was almost two-fold greater than that of Ni3S2(0.01mg cm-2). Moreover, the processing temperature (200oC) of nickel sulfide is much lower than that of Pt(450oC), which enables the use of flexible substrates, which are preferred for quasi-solid-state dye-sensitized solar cells (qssDSSCs). The qssDSSCs fabricated with NiS displayed higher efficiency (6.8%) than that of a conventional Pt electrode(5.8%). |
| 저자 |
허성연, 고종관, 지원석, 한정우, 이현주, 김종학
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| 소속 |
연세대 |
| 키워드 |
nickel sulfide; dssc; counter electrode
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| E-Mail |
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| 원문파일 |
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