Directional management of user interface defects achieved in perovskite solar cells

• Organic-inorganic halide perovskite products have outstanding optical capture capacity and also service provider conductivity. Perovskite solar cells, with amazing power conversion effectiveness, reveal fantastic application potential customers.

Nevertheless, a multitude of negative defects, maturing after or throughout annealing procedure because of their ionic nature, would certainly result in websites of nonradiative recombination and also accelerate degradation of gadget effectiveness and also stability.

A study team lead by PAN Xu from Hefei Institutes of Physical Science (HFIPS), cooperated with ZHENG Haiying from Anhui University, achieved high-efficiency perovskite solar cells by passivating user interface defects making use of new-type low-dimensional perovskite.

Related work has been released on ACS Energy Letters.

This group passivated as well as maintained the perovskite light soaking up layer with amphoteric heterocyclic cation, and also created a new-type low-dimensional perovskite passivation layer. This unique perovskite can manage various surface-terminating ends at the interface and also reveal multiple passivation impacts owing to its amphoteric nature and also strong molecular interaction.

According to the academic computation of defect development energy, the development of lead-based defect was properly inhibited. The customized perovskite solar cells presented reduced defect thickness and also reduced nonradiative recombination, consequently bring about the power conversion effectiveness went beyond 24%. Besides, the long-term security against humidity, heat and light was enhanced.

This work showed a direction for the directional monitoring of user interface Pb-based defects throughout the sensible application of perovskite solar gadgets.

The research study was sustained by China Postdoctoral Science Foundation, Anhui Province Natural Science Foundation, CASHIPS Director's Foundation, and et al