Thermal Properties of TiO2/PbS Nanoparticle Solar Cells

Nanomaterials and Nanotechnology

Sue A. Carter¹  Derek Padilla¹  Daoli Zhang¹  Guangmei Zhai¹  Glenn B. Alers¹  Alison J. Breeze¹ 

关键词: Temperature;    Charge Transport;    Quantum Dot;    Short-Circuit Current;    Photovoltaic;   

DOI  :  10.5772/55901

来源: InTech

【 摘 要 】

Photovoltaic performance is shown to depend on ligand capping on PbS nanoparticle solar cells by varying the temperature between 140K and 350K. The thermal response of open-circuit voltage, short-circuit current density, fill-factor and shunt resistance varies between the ligands. A large increase in short-circuit current density at low temperatures is observed for 1,2-ethanedithiol and 3-mercaptopropionic acid and a relatively constant short-circuit current density is observed for the stiffer 1,4-benzenedithiol. Dark data provide evidence for tunnelling transport being the dominant charge conduction mechanism for all three ligand devices with recombination occurring within deep trap states. Under illumination, devices exhibit band-to-band recombination, indicated by an ideality factor of nearly unity.

【 授权许可】

Unknown