摘要
通过检测染料敏化TiO_2纳米晶太阳电池中TiO_2膜厚度和入射光的强度对电池光电转换性能的影响来研究电池中电子的传输性能。结果表明:TiO_2膜厚度和入射光强度对电池性能有很大的影响。当TiO_2膜厚度增大时,电池的短路电流(I_(sc))加大,而填充因子(ff)下降,开路电压(V_(oc))先上升后下降,电池的单色光光电转化效率(IPCE)增大;当光强度加大时,电池的短路电流和开路电压均增加,但是电池的填充因子降低。并用UV-Vis 等手段表征了染料RuL_2(SCN)_2。
The nature of electron migration in dye-sensitized TiO2 nanocrystalline solar cells was investigated through discussing the influence of the incident light intensity and the thickness of TiO2 films on the photoelectric properties of cells in this paper. It shows that they have great influence on the properties of cells. The short-circuit photocurrent (Isc) and the maximum of incident photon-to-current efficiency (IPCE) of cells increase when TiO2 films become thicker, but the fill factor (ff) decreases. And the open-circuit voltage (Voc) increases at first, then decreases. The short-circuit current and the open-circuit voltage of cells become larger with increasing the incident light intensity, but the fill factor becomes smaller. The dye RuL2(SCN)2 is characterized by UV-VIS.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2005年第1期34-38,共5页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(NO.50082003)福建省国际合作项目(NO.20011006)福建省自然科学基金(NO.E0110026)
关键词
TiO2膜厚度
光强度
太阳电池
单色光光电转化效率
Dyes
Electron transitions
Nanostructured materials
Photosensitizers
Semiconducting films
Titanium dioxide
