Beyond Point-like Defects in Bulk Semiconductors: Junction Spectroscopy Techniques for Perovskite Solar Cells and 2D Materials

TL;DR

This review discusses junction spectroscopy techniques (JSTs) for studying defects in advanced semiconductors like perovskites and 2D materials, emphasizing their principles, applications, limitations, and significance in next-generation device research.

Contribution

It provides a comprehensive overview of JST principles and critically evaluates their application to complex emerging materials, highlighting their ongoing relevance.

Findings

JSTs reveal defect energetics in perovskite solar cells.

JSTs help understand defect interactions in 2D materials.

Limitations of JSTs in non-classical systems are discussed.

Abstract

Junction spectroscopy techniques (JSTs) are powerful tools for investigating electrically active defects in semiconductors. Originally developed to study point-like defects in bulk semiconductors, JSTs have since been extended to increasingly complex systems, providing valuable insights into defect energetics and interactions. This review paper outlines the fundamental principles of JSTs and critically examines their application to emerging materials, such as perovskite solar cells and two-dimensional (2D) materials. By highlighting both the capabilities and limitations of JSTs in these non-classical systems, the review demonstrates their continued relevance and important role in advancing next-generation semiconductor materials and devices.