journal article·2024-02Open access

Interfacial Modulation through Mixed‐Dimensional Heterostructures for Efficient and Hole Conductor‐Free Perovskite Solar Cells

Masaud Almalki, Mohammad Hayal Alotaibi, Anwar Q. Alanazi, Felix T. Eickemeyer, Sultan M. Alenzi, Yahya A. Alzahrani, Laura Piveteau, Ahmed Y. Alymani, Abdulrahman Albadri, Hamad Albrithen, Jovana V. Milić, Shaik M. Zakeeruddin, Hong Zhang, Michael Grätzel

Advanced Functional Materials· Volume 34· Issue 6

Abstract

Abstract Perovskite solar cells have led the new surge of solar energy research. However, their instability is a pressing issue mostly attributed to the perovskite interface with charge‐selective transport layers. In this work, diethylammonium iodide (DEAI) surface treatment is used to mitigate interfacial non‐radiative recombination losses by forming a mixed phase of layered perovskite on the surface. This results in enhanced device performance with the power conversion efficiency of 23.3% and improved operational stability under thermal stress. Moreover, the DEAI treatment facilitates interfacial hole transfer, enabling a carbon‐based hole transport layer‐free perovskite solar cell with a power conversion efficiency of 15.6%.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Chalcogenide Semiconductor Thin Films · Organic Light-Emitting Diodes Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Laboratory of Photonics and Interfaces École Polytechnique Fédérale de Lausanne 1015 Lausanne Switzerland

National Center for Nanotechnology and Semiconductors King Abdulaziz City for Science and Technology P.O. Box 6086 Riyadh 11442 Saudi Arabia

National Center for Renewable Energy Technology King Abdulaziz City for Science and Technology P.O. Box 2455 Riyadh 11442 Saudi Arabia

Institute of Chemistry and Chemical Engineering École Polytechnique Fédérale de Lausanne 1015 Lausanne Switzerland

Research Chair for Tribology Surface and Interface Sciences‐Physics and Astronomy Department College of Science P.O. Box 2455 Riyadh 11451 Saudi Arabia

King Abdullah Institute for Nanotechnology King Saudi University P.O. Box2455 Riyadh 11451 Saudi Arabia

Adolphe Merkle Institute University of Fribourg 1700 Fribourg Switzerland

State Key Laboratory of Photovoltaic Science and Technology Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception Institute of Optoelectronics Fudan University Shanghai 200433 China

Funding

King Abdulaziz City for Science and Technology · National Natural Science Foundation of China · King Saud University

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