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AssigneeLos Alamos National Security, LLC
InventorsAditya Mohite, Gautam Gupta, Hsing-Lin Wang, Wanyi Nie
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Hybrid organic-inorganic perovskite thin films with average grain sizes of at least 50 micrometers were prepared and employed in solar cells. The PCE values of the solar cells did not degrade with the direction or the scan-rate of the applied voltage. The larger average grain sizes are believed to assist in reducing the influence of defect states on carrier recombination. The tunability of PCE with substrate temperature may be correlated to the quality of the crystalline perovskite formed using the hot-casting procedure. The larger average grain sizes lead to good crystalline quality, low defect density, and high carrier mobility. The process for growing hybrid organic-inorganic perovskites may be applicable to the preparation of other materials to overcome problems related to polydispersity, defect formation, and grain boundary recombination.
A process for preparing a device, comprising:
A device prepared by a process comprising the steps of:
A process for preparing a perovskite thin film comprising the steps of:
(canceled)
Dependencies are inferred from the claim text.