Enhancing the photoinduced hole transport in solid state quantum-dots solar cells: The case of CdSe
Solar cells based on colloidal quantum dots (CQDs) have achieved great progress in recent years. However, the stable and high performance all solid solar cells using CQDs as light absorber are numbered till now. In this work, CdSe CQDs solid state solar cells have been fabricated as a case for revealing the reasons of low photoelectric conversion efficiency. It finds that the inefficient photoinduced hole transport block the improvement of the photoelectric performance. For facilitating the hole transport, a thin PbS interlayer has been fitted between the CQDs and hole transport layer, and as a result the photocurrent receives about 7.8 times increase in the devices constructed with 5.1 nm CQDs. Finally, a 1.29% of PCE is obtained from the solar cells with FTO/TiO 2 /CdSe CQDs/PbS/ Sprio-MeOTAD/Ag structure.
危险品化学品经营许可证（带存储）