p-type Li, Cu-codoped NiOx hole-transporting layer for efficient planar perovskite solar cells

Area of Science:

• Materials Science
• Renewable Energy
• Photovoltaics

Background:

• Perovskite solar cells (PSCs) are a promising photovoltaic technology.
• Efficient hole transport materials (HTMs) are crucial for PSC performance.
• Nickel oxide (NiOx) is a potential p-type HTM for PSCs.

Purpose of the Study:

• To develop a simple solution-processed p-type inorganic hole transport material.
• To investigate the effect of Li and Cu co-doping on NiOx films.
• To enhance the performance of lead halide perovskite solar cells using co-doped NiOx as hole selective contacts.

Main Methods:

• Deposition of Li, Cu-codoped NiOx films via a simple solution-based process.
• Fabrication of lead halide perovskite solar cells utilizing the co-doped NiOx films as hole selective contacts.
• Characterization of the electrical conductivity and optical transmittance of the NiOx electrode interlayers.

Main Results:

• Successfully deposited Li, Cu-codoped NiOx films using a solution-based method.
• Achieved an enhanced power conversion efficiency (PCE) of 14.53% in PSCs.
• Demonstrated improved electrical conductivity and optical transmittance of the co-doped NiOx electrode.

Conclusions:

• Li, Cu-codoping is an effective strategy to enhance NiOx as a hole transport material.
• Solution-processed co-doped NiOx films offer a viable pathway for efficient PSCs.
• The improved electrode properties directly contribute to the enhanced photovoltaic performance.