研究目的
Investigating the use of anodically electrodeposited NiO nanoflakes as hole selective contact in efficient air processed p-i-n perovskite solar cells.
研究成果
The potentiostatic anodic electrodeposition of NiOOH is an effective route to produce nanostructured NiO films with tunable morphology and enhanced electronic properties for perovskite solar cells. Devices fabricated with electrodeposited NiO as the hole selective layer achieved a PCE of 16.1%, outperforming those with sol-gel spin-coated NiO. This demonstrates the potential of electrodeposition in advancing perovskite photovoltaics.
研究不足
The study focuses on the electrodeposition of NiO as a hole selective layer and its application in p-i-n perovskite solar cells. The scalability of the electrodeposition process and the long-term stability of the devices are not extensively discussed.
1：Experimental Design and Method Selection:
The study employs potentiostatic anodic electrodeposition of NiOOH on ITO substrates, followed by thermal annealing to obtain NiO films. The electrochemical features and morphology of these films are compared with sol-gel derived NiO.
2：Sample Selection and Data Sources:
ITO covered glass substrates are used for the electrodeposition of NiOOH, which is then converted to NiO through thermal annealing. CH3NH3PbI3 perovskite is deposited on these NiO substrates in ambient atmosphere.
3：List of Experimental Equipment and Materials:
Equipment includes an AUTOLAB PGSTAT12 potentiostat, FE-SEM for morphological characterization, UV–Vis spectrophotometer for optical properties, and a solar simulator for device testing. Materials include nickel acetate tetrahydrate, PbI2, methylammonium iodide, and other chemicals from SigmaAldrich.
4：Experimental Procedures and Operational Workflow:
The electrodeposition is carried out at different potentials, followed by thermal annealing. Perovskite layers are deposited via spin-coating in air, with PCBM and BCP as electron selective layers and silver as the counter electrode.
5：Data Analysis Methods:
The performance of the solar cells is evaluated through JV curves, IPCE measurements, and electrochemical impedance spectroscopy.
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