Black phosphorus quantum dots in inorganic perovskite thin films for efficient photovoltaic application

Black phosphorus quantum dots (BPQDs) are proposed as effective seed-like sites to modulate the nucleation and growth of CsPbI(2)Br perovskite crystalline thin layers, allowing an enhanced crystallization and remarkable morphological improvement. We reveal that the lone-pair electrons of BPQDs can i...

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Autores principales: Gong, Xiu, Guan, Li, Li, Qingwei, Li, Yan, Zhang, Tao, Pan, Han, Sun, Qiang, Shen, Yan, Grätzel, Carole, Zakeeruddin, Shaik M., Grätzel, Michael, Wang, Mingkui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7148097/
https://www.ncbi.nlm.nih.gov/pubmed/32300650
http://dx.doi.org/10.1126/sciadv.aay5661
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author Gong, Xiu
Guan, Li
Li, Qingwei
Li, Yan
Zhang, Tao
Pan, Han
Sun, Qiang
Shen, Yan
Grätzel, Carole
Zakeeruddin, Shaik M.
Grätzel, Michael
Wang, Mingkui
author_facet Gong, Xiu
Guan, Li
Li, Qingwei
Li, Yan
Zhang, Tao
Pan, Han
Sun, Qiang
Shen, Yan
Grätzel, Carole
Zakeeruddin, Shaik M.
Grätzel, Michael
Wang, Mingkui
author_sort Gong, Xiu
collection PubMed
description Black phosphorus quantum dots (BPQDs) are proposed as effective seed-like sites to modulate the nucleation and growth of CsPbI(2)Br perovskite crystalline thin layers, allowing an enhanced crystallization and remarkable morphological improvement. We reveal that the lone-pair electrons of BPQDs can induce strong binding between molecules of the CsPbI(2)Br precursor solution and phosphorus atoms stemming from the concomitant reduction in coulombic repulsion. The four-phase transition during the annealing process yields an α-phase CsPbI(2)Br stabilized by BPQDs. The BPQDS/CsPbI(2)Br core-shell structure concomitantly reinforces a stable CsPbI(2)Br crystallite and suppresses the oxidation of BPQDs. Consequently, a power conversion efficiency of 15.47% can be achieved for 0.7 wt % BPQDs embedded in CsPbI(2)Br film-based devices, with an enhanced cell stability, under ambient conditions. Our finding is a decisive step in the exploration of crystallization and phase stability that can lead to the realization of efficient and stable inorganic perovskite solar cells.
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spelling pubmed-71480972020-04-16 Black phosphorus quantum dots in inorganic perovskite thin films for efficient photovoltaic application Gong, Xiu Guan, Li Li, Qingwei Li, Yan Zhang, Tao Pan, Han Sun, Qiang Shen, Yan Grätzel, Carole Zakeeruddin, Shaik M. Grätzel, Michael Wang, Mingkui Sci Adv Research Articles Black phosphorus quantum dots (BPQDs) are proposed as effective seed-like sites to modulate the nucleation and growth of CsPbI(2)Br perovskite crystalline thin layers, allowing an enhanced crystallization and remarkable morphological improvement. We reveal that the lone-pair electrons of BPQDs can induce strong binding between molecules of the CsPbI(2)Br precursor solution and phosphorus atoms stemming from the concomitant reduction in coulombic repulsion. The four-phase transition during the annealing process yields an α-phase CsPbI(2)Br stabilized by BPQDs. The BPQDS/CsPbI(2)Br core-shell structure concomitantly reinforces a stable CsPbI(2)Br crystallite and suppresses the oxidation of BPQDs. Consequently, a power conversion efficiency of 15.47% can be achieved for 0.7 wt % BPQDs embedded in CsPbI(2)Br film-based devices, with an enhanced cell stability, under ambient conditions. Our finding is a decisive step in the exploration of crystallization and phase stability that can lead to the realization of efficient and stable inorganic perovskite solar cells. American Association for the Advancement of Science 2020-04-10 /pmc/articles/PMC7148097/ /pubmed/32300650 http://dx.doi.org/10.1126/sciadv.aay5661 Text en Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
spellingShingle Research Articles
Gong, Xiu
Guan, Li
Li, Qingwei
Li, Yan
Zhang, Tao
Pan, Han
Sun, Qiang
Shen, Yan
Grätzel, Carole
Zakeeruddin, Shaik M.
Grätzel, Michael
Wang, Mingkui
Black phosphorus quantum dots in inorganic perovskite thin films for efficient photovoltaic application
title Black phosphorus quantum dots in inorganic perovskite thin films for efficient photovoltaic application
title_full Black phosphorus quantum dots in inorganic perovskite thin films for efficient photovoltaic application
title_fullStr Black phosphorus quantum dots in inorganic perovskite thin films for efficient photovoltaic application
title_full_unstemmed Black phosphorus quantum dots in inorganic perovskite thin films for efficient photovoltaic application
title_short Black phosphorus quantum dots in inorganic perovskite thin films for efficient photovoltaic application
title_sort black phosphorus quantum dots in inorganic perovskite thin films for efficient photovoltaic application
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7148097/
https://www.ncbi.nlm.nih.gov/pubmed/32300650
http://dx.doi.org/10.1126/sciadv.aay5661
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