Protocol for deciphering the electrical parameters of perovskite solar cells using immittance spectroscopy

Area of Science:

• Materials Science
• Electrical Engineering
• Renewable Energy

Background:

• Perovskite solar cells (PSCs) are a promising photovoltaic technology.
• Understanding charge carrier dynamics is crucial for optimizing PSC performance.
• Immittance spectroscopy is a powerful tool for device characterization.

Purpose of the Study:

• To present a protocol for fabricating inverted (p-i-n)-type PSCs.
• To elucidate the electrical characteristics of these devices using immittance spectroscopy.
• To demonstrate the applicability of the protocol to other semiconductor devices.

Main Methods:

• Fabrication of inverted (p-i-n)-type perovskite solar cells.
• Immittance spectroscopy, including temperature-dependent capacitance-frequency (C-f) spectra.
• Impedance spectra and Mott-Schottky analyses.

Main Results:

• The protocol enables the fabrication of functional inverted PSCs.
• Immittance spectroscopy successfully reveals key electrical properties and charge carrier dynamics.
• The methodology is adaptable for standard (n-i-p) PSCs and other multilayer devices.

Conclusions:

• The presented protocol offers a reliable method for perovskite solar cell fabrication and characterization.
• Immittance spectroscopy provides comprehensive insights into device physics.
• This work contributes to the advancement of perovskite solar cell technology.