| Gd2O3:Er3+上转换发光粉在染料敏化太阳电池中的应用 |
| Application of Gd2O3:Er3+ Up-Conversion Luminescent Powder in Dye-Sensitized Solar Cells |
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| 摘要: 采用沉淀-煅烧法制备了Gd2O3:Er3+上转换发光粉,通过X射线衍射、扫描电子显微镜、能谱和荧光光谱对其进行了表征,并利用该发光粉具有上转换发光的特性将其应用于染料敏化太阳电池(DSSC).结果表明,管状Gd2O3:Er3+上转换发光粉可增加电池对太阳光的吸收范围和吸收效率,提高电池的光电流和光电压.研究了掺杂量对电池性能的影响,当掺杂量为5wt%时,光电转换效率从5.93%升高到7.55%,提高约27%. |
| 关键词: 染料敏化太阳电池 上转换 稀土 发光粉 |
| 基金项目: 国家自然科学基金(No.U1205112,No.21301060);教育部高等学校博士学科点(博导类)专项科研基金(No.20123501110001);华侨大学中青年教师科研提升资助计划(No.ZQN-PY106);福建省高等学校新世纪优秀人才支持计划资助项目. |
| Abstract: Gd2O3:Er3+ up-conversion luminescent powder was synthesized by precipitation-calcination method, and characterized by X-ray diffraction, scanning electron microscope, energy dispersive spectrometry and fluorescence spectroscopy. The luminescent powder was added to the TiO2 photoanode of dye-sensitized solar cells to make use of up-conversion luminescent character. The results indicate that Gd2O3:Er3+ up-conversion luminescent powder with tubular morphology improves the light harvesting via a conversion luminescence process and increases absorption efficiency by light scattering, resulting in the increment of photocurrent and photovoltage. When TiO2 is doped by 5wt% Gd2O3:Er3+, the overall light-to-electric conversion efficiency is enhanced from 5.93% to 7.55%, i.e. about 27% increase. |
| Keywords: dye-sensitized solar cells up-conversion rare earth luminescent powder |
| 投稿时间：2014-08-14 修订日期：2014-09-29 |
| 摘要点击次数: 1904 |
| 全文下载次数: 1849 |
| 范乐庆,李兆磊,黄昀昉,林建明,吴季怀.Gd2O3:Er3+上转换发光粉在染料敏化太阳电池中的应用[J].无机化学学报,2015,31(1):147-152. |
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