Deposition and characterization of CuI thin film as hole transporting layer for perovskite solar cells
Source abstract
Abstract
Inorganic CuI thin films were grown using e-beam evaporation to substitute expensive organic hole transporting layer (HTL) material used in perovskite solar cells (PSCs). CuI powder was e-beam evaporated at 25 W for 5 and 10 min to yield 100 nm film on glass substrate and 200 nm film on perovskite layer, respectively. X-ray diffraction pattern of CuI thin film showed a single peak at 26.04°, corresponding to (111) plane of crystalline gamma (γ) phase. Scanning electron microscopy imaging revealed the nanostructured thin film. A bandgap of 3.1 eV was calculated by absorption curves of CuI thin film. The deposited CuI thin film on glass substrate showed a transmittance of 75% in the visible region. X-ray and ultraviolet photoemission spectroscopy data revealed that the films were slightly Cu deficient and p-type nature, respectively. PSC with a device architecture of glass/ITO/c-TiO2/m-TiO2/CH3NH3SnI3/CuI/Au was fabricated. CuI thin film is a promising alternative HTL for organic material in the improvement of PSCs. Graphical abstract
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Chalcogenide Semiconductor Thin Films
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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