Flexible CdS/CdSe quantum dots sensitized solar cells with high performance and durability

Abstract

Abstract The research work aimed to explore a serial of facile methods to obtain low‐cost, flexible, and high‐performance CdS/CdSe QDSSCs. The flexible photoanode was prepared on the ITO/PEN substrate by blade coating. In order to improve the bonding performance between different layers of photovoltaic devices, the introduction of additives in the precursor slurry and the rapid annealing after blade coating were adopted. The flexible CdS/CdSe QDSSCs deliver energy conversion efficiency over 3%. When the tert‐butanol additive was introduced, the conversion efficiency of the flexible device was as high as 3.49%. Meanwhile, flexible devices also showed excellent bending stability. When hydrochloric acid additives were introduced, the energy conversion efficiency retention rate of flexible CdS/CdSe QDSSCs was 72.7%, which showed great application potential.

Keywords

• flexible photovoltaic devices
• quantum dots
• sensitized solar cells
• wet‐chemical synthesis