在固态染料太阳能电池中进行电子传输和再组合,其中以spiro-OMeTAD作为孔导体
Francisco Fabregat-Santiago1, Juan Bisquert, Le Cevey
1Photovoltaics and Optoelectronic Devices Group, Departament de Fisica, Universitat Jaume I, 12071 Castello, Spain. fran.fabregat@fca.uji.es
Journal of the American Chemical Society
|January 15, 2009
概括
固态染料敏感太阳能电池 (SDSC) 中的电子运输类似于液体电解质装置. 然而,SDSC中的更高的重组率限制了效率,TiO(2) 电子传输和螺旋OMeTAD电阻会影响不同电位的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 可再生能源可再生能源是可再生能源.
背景情况:
- 固态染料敏感太阳能电池 (SDSC) 与使用液体电解质的传统染料敏感太阳能电池 (DSC) 相比,具有潜在的优势.
- 螺旋OMeTAD是高性能SDSC中常见的孔导体.
- 了解电荷传输和重组机制对于提高SDSC效率至关重要.
研究的目的:
- 研究和比较基于TiO(2) 的SDSC与高性能液体电解质DSC中的电子传输机制.
- 确定限制固态染料敏感太阳能电池效率的关键因素.
主要方法:
- 使用阻抗光谱分析电荷传输和重组参数在各种黑暗稳定状态条件下.
- 在固态和液态电解质太阳能电池配置之间比较性能指标.
主要成果:
- 在TiO中的电子运输机制(2) 带有螺旋OMeTAD的SDSC与高性能液体电解质DSC相似.
- 固态设备具有显著更高的重组率,这是效率的主要限制.
- 在TiO(2) 中的电子运输限制了在低电位上的性能,而在高电位上的螺旋OMeTAD电阻影响了填充因子和效率.
结论:
- 在SDSC中的重组损失抵消了来自较低孔费米水平的潜在光伏收益.
- 优化电荷传输和最大限度地减少TiO(2) 和螺旋-OMeTAD层的重组对于推进SDSC技术至关重要.
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