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Review on Surface Modification of SnO2 Electron Transport Layer for High-Efficiency Perovskite Solar Cells

Applied sciences, 2023-10, Vol.13 (19), p.10715 [Peer Reviewed Journal]

2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 2076-3417 ;EISSN: 2076-3417 ;DOI: 10.3390/app131910715

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  • Title:
    Review on Surface Modification of SnO2 Electron Transport Layer for High-Efficiency Perovskite Solar Cells
  • Author: Hoang Huy, Vo Pham ; Bark, Chung-Wung
  • Subjects: Alternative energy sources ; Efficiency ; electron transport layers ; Engineering ; Interfacial bonding ; Light ; Manufacturing ; Morphology ; perovskite solar cells ; photovoltaic systems ; Quantum dots ; Solar energy ; surface modification ; Temperature ; tin oxide
  • Is Part Of: Applied sciences, 2023-10, Vol.13 (19), p.10715
  • Description: In the planar heterojunction perovskite solar cell (PSC) structure, among numerous contenders, tin oxide (SnO2) has been utilized, instead of TiO2, as the material for the electron transport layer (ETL) owing to its good band alignment, ultraviolet light resistance, strong charge extraction, and low photocatalytic activity. However, the morphology of the SnO2 ETL has proven to be unstable under low-temperature processing, leading to low electron extraction in PSCs. Therefore, the surface morphology must be modified to achieve high-performance PSCs. In this review, we provide an overview of the fundamental insights into how surface variations affect the ETL performance. The significance and the design rule of surface modification for an efficient SnO2 ETL, that is, the intentional alteration of the SnO2 interface, are discussed. Based on the evaluations, distinct surface engineering procedures and how they are implemented are presented. The effects of chemical and physical interactions on the properties of SnO2 are elucidated in detail; these have not been considered in previous studies. Finally, we provide an outlook on, highlight the key challenges in, and recommend future research directions for the design of the interfaces of highly efficient and stable PSCs.
  • Publisher: Basel: MDPI AG
  • Language: English
  • Identifier: ISSN: 2076-3417
    EISSN: 2076-3417
    DOI: 10.3390/app131910715
  • Source: ROAD: Directory of Open Access Scholarly Resources
    ProQuest Central
    DOAJ Directory of Open Access Journals
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