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Charge Transport in Perovskite Solar Cells: Materials and Mechanisms

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Energy Materials".

Deadline for manuscript submissions: closed (20 September 2023) | Viewed by 6475

Special Issue Editors

Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
Interests: perovskite solar cells; single atom catalysis
Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
Interests: perovskite solar cells; oxide semiconductor
Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
Interests: perovskite solar cells; triboelectric nanogenerators

Special Issue Information

Dear Colleague,

This Special Issue of Materials is devoted to charge transport and related mechanisms in perovskite solar cells (PSCs). Solid-state PSCs using metal–halide perovskite light absorbers have received increased attention thanks to their power conversion efficiency soaring from 10.9% to 25.7% in less than 10 years. This is the result of improvements in perovskite composition, crystallization regulation, interfaces, and novel materials engineering. In addition, the long-term stability of PSCs has also significantly improved over the past years. Such rapid development makes PSCs a competitive candidate for next-generation photovoltaics. Efficient charge transport is a key factor in realizing high-efficiency and high-stability PSCs for future commercialization. This Special Issue mainly involves high-performance electron transport materials, hole transport materials, and related material structural design, performance regulation, as well as the development and exploration of special functions of these materials. In addition, it also covers the design and development of interfacial materials and related energy level regulation, defect passivation and interfacial charge transport mechanism, etc.

Prof. Dr. Yantao Shi
Dr. Qingshun Dong
Dr. Yudi Wang
Guest Editors

Manuscript Submission Information

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Keywords

  • metal halide perovskite
  • electron transport
  • hole transport
  • defect passivation
  • stability

Published Papers (2 papers)

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Research

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10 pages, 8145 KiB  
Article
Direct Nanoscale Visualization of the Electric-Field-Induced Aging Dynamics of MAPbI3 Thin Films
by Nikita A. Emelianov, Victoria V. Ozerova, Yuri S. Fedotov, Mikhail V. Zhidkov, Rasim R. Saifutyarov, Maria S. Malozovskaya, Mikhail S. Leshchev, Eugeniy V. Golosov, Lyubov A. Frolova and Pavel A. Troshin
Materials 2023, 16(12), 4277; https://doi.org/10.3390/ma16124277 - 09 Jun 2023
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Abstract
Perovskite solar cells represent the most attractive emerging photovoltaic technology, but their practical implementation is limited by solar cell devices’ low levels of operational stability. The electric field represents one of the key stress factors leading to the fast degradation of perovskite solar [...] Read more.
Perovskite solar cells represent the most attractive emerging photovoltaic technology, but their practical implementation is limited by solar cell devices’ low levels of operational stability. The electric field represents one of the key stress factors leading to the fast degradation of perovskite solar cells. To mitigate this issue, one must gain a deep mechanistic understanding of the perovskite aging pathways associated with the action of the electric field. Since degradation processes are spatially heterogeneous, the behaviors of perovskite films under an applied electric field should be visualized with nanoscale resolution. Herein, we report a direct nanoscale visualization of methylammonium (MA+) cation dynamics in methylammonium lead iodide (MAPbI3) films during field-induced degradation, using infrared scattering-type scanning near-field microscopy (IR s-SNOM). The obtained data reveal that the major aging pathways are related to the anodic oxidation of I and the cathodic reduction of MA+, which finally result in the depletion of organic species in the channel of the device and the formation of Pb. This conclusion was supported by a set of complementary techniques such as time-of-flight secondary ion mass spectrometry (ToF-SIMS), photoluminescence (PL) microscopy, scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) microanalysis. The obtained results demonstrate that IR s-SNOM represents a powerful technique for studying the spatially resolved field-induced degradation dynamics of hybrid perovskite absorbers and the identification of more promising materials resistant to the electric field. Full article
(This article belongs to the Special Issue Charge Transport in Perovskite Solar Cells: Materials and Mechanisms)
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Review

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29 pages, 7736 KiB  
Review
Bulk Perovskite Crystal Properties Determined by Heterogeneous Nucleation and Growth
by Pranta Barua and Inchan Hwang
Materials 2023, 16(5), 2110; https://doi.org/10.3390/ma16052110 - 05 Mar 2023
Cited by 3 | Viewed by 4800
Abstract
In metal halide perovskites, charge transport in the bulk of the films is influenced by trapping and release and nonradiative recombination at ionic and crystal defects. Thus, mitigating the formation of defects during the synthesis process of perovskites from precursors is required for [...] Read more.
In metal halide perovskites, charge transport in the bulk of the films is influenced by trapping and release and nonradiative recombination at ionic and crystal defects. Thus, mitigating the formation of defects during the synthesis process of perovskites from precursors is required for better device performance. An in-depth understanding of the nucleation and growth mechanisms of perovskite layers is crucial for the successful solution processing of organic–inorganic perovskite thin films for optoelectronic applications. In particular, heterogeneous nucleation, which occurs at the interface, must be understood in detail, as it has an effect on the bulk properties of perovskites. This review presents a detailed discussion on the controlled nucleation and growth kinetics of interfacial perovskite crystal growth. Heterogeneous nucleation kinetics can be controlled by modifying the perovskite solution and the interfacial properties of perovskites adjacent to the underlaying layer and to the air interface. As factors influencing the nucleation kinetics, the effects of surface energy, interfacial engineering, polymer additives, solution concentration, antisolvents, and temperature are discussed. The importance of the nucleation and crystal growth of single-crystal, nanocrystal, and quasi-two-dimensional perovskites is also discussed with respect to the crystallographic orientation. Full article
(This article belongs to the Special Issue Charge Transport in Perovskite Solar Cells: Materials and Mechanisms)
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