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P-N junction

P-N junction

A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...

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Updated: Jan 11, 2026

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

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Published on: March 19, 2017

Inorganic Charge Transport Layers for High-Performance p-i-n Perovskite Solar Cells.

Xinxing Liu¹, Junbo Gong², Bofei Xue²

¹Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, P. R. China.

|November 17, 2025

Summary

This summary is machine-generated.

Inorganic charge transport layers (CTLs) offer stability and cost benefits for perovskite solar cells (PSCs). This review highlights advances in inorganic CTLs for efficient and scalable PSCs and tandem photovoltaics.

Keywords:

deposition methods inorganic transport layers inverted perovskite solar cells stability

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Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

Published on: February 27, 2017

Area of Science:

Materials Science
Renewable Energy
Photovoltaics

Background:

Inverted (p-i-n) perovskite solar cells (PSCs) show promise due to low hysteresis and tandem compatibility.
Current high-efficiency PSCs often use organic charge transport layers (CTLs), which have stability and cost limitations.
Inorganic CTLs offer better stability and lower costs but lag in efficiency due to interfacial issues.

Purpose of the Study:

To review recent progress in inorganic electron and hole transport layers (ETLs and HTLs) for p-i-n PSCs.
To analyze the structure-property-performance relationships of inorganic CTLs.
To identify challenges and future research directions for inorganic CTLs in PSCs and tandem systems.

Main Methods:

Systematic review of recent literature on inorganic CTLs for p-i-n PSCs.
Critical assessment of material properties, deposition techniques, and interfacial engineering strategies.
Analysis of structure-property-performance relationships in devices.

Main Results:

Inorganic CTLs provide enhanced thermal and chemical stability compared to organic alternatives.
Progress has been made in understanding and addressing interfacial challenges with inorganic CTLs.
Despite improvements, inorganic CTLs still face efficiency gaps compared to organic counterparts.

Conclusions:

Inorganic CTLs are crucial for developing stable, cost-effective, and scalable PSCs.
Further research on interfacial engineering and material optimization is needed to match organic CTL performance.
Advancing inorganic CTLs will accelerate the commercialization of PSCs and tandem photovoltaic technologies.