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Efficient and Stable Planar n-i-p Perovskite Solar Cells with Negligible Hysteresis via Solution Processed Cu2O Nanocubes as Low-Cost Material
Release time: 2019-07-09 16:23:41   author:本站编辑   source: 本站原创   Number of visits:

Efficient and stable planar n-i-p perovskite solar cells with negligible hysteresis via solution processed cu2o nanocubes as low-cost hole-transport material

Inorganic hole-transport materials are commercially desired to decrease the fabrication cost of perovskite solar cells. In order to improve the efficiency and stability of perovskite solar cells (PCSs), Cu2O nanocubes as inorganic hole transport materials (HTMs) have been developed via simple technique and applied into PSCs. The application of Cu2O as top layer in perovskite solar cells is still complicated due to the difficulty of solution processing. Herein, the issue was solved by selecting a suitable solvent. Accordingly, the devices based on Cu2O nanocubes as HTMs have demonstrated stability and efficiency over 17%, which is comparable to the efficiency of devices based on organic HTMs. The new structure of Cu2O nanocubes is enhanced the carrier mobility with preferable energy alignment to perovskite layer and superb stability. Cu2O nanocubes (HTM) based PSCs are achieved stabilized efficiency exceeding 17% with high stability while organic P3HT-based PSCs displayed lower efficiency 15.59% and their running stability are reduced. This elucidates that Cu2O nanocubes is a promising HTM for efficient and stable PSCs.

The work was published by ChemSusChem. 2019 Jun 19. DOI: 10.1002/cssc.201901430