| 锰掺杂硒硫化镉光阳极的制备与光电性能 |
| Preparation and Photoelectric Performance of Mn-Doped-CdSSe2 Quantum Dots Sensitized Electrode |
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| 摘要: 将适量Se加入到Na2S甲醇水溶液中反应生成Na2SSe2阴离子前驱体, 以Cd(NO3)2、Mn(CH3COO)2为阳离子前驱体, 通过连续离子层吸附反应(SILAR)分别制备出CdSSe2/TiO2或 Mn2+掺杂的Mn-CdSSe2/TiO2量子点敏化光阳极。采用拉曼光谱、X射线光电子能谱和能量色散X射线能谱分析确定阴离子前驱体和量子点的价键结构和组成;通过紫外可见吸光光谱表征量子点的光吸收性能;利用J-V曲线和IPCE分别对CdS、CdSSe2和Mn-CdSSe2量子点敏化的TiO2光阳极的光电性能进行了表征。实验结果表明, 采用 0.12 mol·L-1 Se和0.5 mol·L-1 Na2S制备的阴离子前驱体、0.5 mol·L-1 Cd2+和 0.3 mol·L-1 Mn2+阳离子前驱体, 通过SILAR法制备的Mn-CdSSe2/TiO2光阳极, 能量转换效率比CdSSe2/TiO2和CdS/TiO2光阳极分别提高了90%和247%。 |
| 关键词: 量子点敏化太阳能电池 硒硫化钠 锰掺杂的硒硫化镉 光阳极 |
| 基金项目: 国家973项目基金(No.2015CB251100)资助项目。 |
| Abstract: Sodium sulfide-selenium prepared by adding Se powder into the Na2S methanol-water solution was used as the anionic precursor, and the methanol-water solution of Cd(NO3)2 and Mn(CH3COO)2 was used as the cationic precursor, respectively. Then, cadmium sulfide-selenium quantum dots sensitized TiO2 photoanodes (CdSSe2/TiO2) and Mn2+ doped cadmium sulfide-selenium quantum dots sensitized TiO2 photoanodes (Mn-CdSSe2/TiO2) were successfully prepared by the successive ionic layer adsorption and reaction (SILAR) for Quantum dots solar cell (QDSC). The Raman spectrum, XPS were applied to analyze the chemical bonds of the Na2SSe2 precursors. EDX and UV-Vis were investigated the composition and light absorption property of Mn-CdSSe2/TiO2 photoanode. J-V curves and IPCE were used to characterize photovoltaic performance of the as-prepared CdS/TiO2, CdSSe2/TiO2 and Mn-CdSSe2/TiO2 photoanodes. The results reveals that the Mn-CdSSe2/TiO2 photoanode with enhanced energy conversion efficiency has been fabricated by SILAR method using the anionic precursors prepared with 0.12 mol·L-1 Se and 0.5 mol·L-1 Na2S, the cationic precursor of 0.5 mol·L-1 Cd2+ and 0.3 mol·L-1 Mn2+. Compared with the CdSSe2/TiO2 and CdS/TiO2 photoanodes, the efficiency of the Mn-CdSSe2/TiO2 photoanode is increased by 90% and 247%, separately. |
| Keywords: quantum dots sensitized solar cell sodium sulfide-selenium Mn doped sodium sulfide-selenium photoanode |
| 投稿时间：2015-03-24 修订日期：2015-05-21 |
| 摘要点击次数: 2091 |
| 全文下载次数: 1972 |
| 白述铭,田建华,马换梅,朱坤磊,单忠强.锰掺杂硒硫化镉光阳极的制备与光电性能[J].无机化学学报,2015,31(7):1365-1372. |
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