"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Latest advances in TiO2-perovskite nanostructured interface engineering. Short review

IRINELA CHILIBON1, ILEANA CRISTINA VASILIU1,*

Affiliation

  1. National Institute of Research and Development for Optoelectronics INOE 2000, 409 Atomistilor Street, P.O. Box MG-5, RO-077125, Magurele, Romania

Abstract

The evolving perovskite photovoltaic market includes thin-film perovskite, perovskite/silicon tandem and all-perovskite tandem. The future trends are to enhance the efficiencies of the perovskite solar cells (PSCs) and to explore combining the benefits of previous generations with new materials and approaches of the fourth generation of (PSCs). TiO2 is considered an efficient and stable electron transport layer (ETL) for perovskite solar cells. Tuning the TiO2 surface layer in perovskite solar cells is a crucial strategy for enhancing device performance and stability. This involves modifying the TiO2 layer's properties, such as its surface energy levels, charge carrier density, and interface with the perovskite layer, to optimize electron transport and minimize recombination losses. We present the recent advances in the strategies for modeling the interfaces of TiO2 -based ETLs in perovskite solar cells to improve electron extraction and transport, reduce recombination losses and enhance stability. We provide an overview of the current state-of-the-art research of TiO2 carriers’ selective surfaces in perovskite solar cells by surface modifications, using bilayer structures, doped TiO2, nanostructured and hybrid materials as well as discussions on challenges and opportunities in the field..

Keywords

Perovskite photovoltaics, TiO2, Interface engineering.

Submitted at: Feb. 11, 2026
Accepted at: April 6, 2026

Citation

IRINELA CHILIBON, ILEANA CRISTINA VASILIU, Latest advances in TiO2-perovskite nanostructured interface engineering. Short review, Journal of Optoelectronics and Advanced Materials Vol. 28, Iss. 3-4, pp. 187-198 (2026)