Low temperature solution processable TiO                         2                          nano-sol for electron transporting layer of flexible perovskite solar cells

Myung Sang You; Jin Hyuck Heo; Jin Kyoung Park; Sang Hwa Moon; Bum Jun Park; Sang Hyuk Im

doi:10.1016/j.solmat.2019.02.003

Low temperature solution processable TiO ₂ nano-sol for electron transporting layer of flexible perovskite solar cells

Myung Sang You, Jin Hyuck Heo, Jin Kyoung Park, Sang Hwa Moon, Bum Jun Park, Sang Hyuk Im

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

Low-temperature solution processable TiO ₂ nano-sol for electron transporting layer (ETL) of flexible perovskite solar cells is prepared by synthesizing TiO ₂ nano-sols by peptization in acidic aqueous solution and re-dispersing the TiO ₂ nanoparticles in H ₂ O, ethanol (EtOH), dimethylsulfoxied (DMSO), and N,N-dimethylformamide (DMF). By considering dielectric constant, zeta potential, and surface tension of solvent media, we found that the DMF is the best to form uniform TiO ₂ ETL by spin-coating among them because it has low surface tension and high zeta potential. Accordingly, we could demonstrate 18.2% power conversion efficiency (PCE) for rigid glass substrate based perovskite solar cells and 15.8% PCE for flexible polymer substrate based devices by low-temperature solution process.

Original language	English
Pages (from-to)	1-6
Number of pages	6
Journal	Solar Energy Materials and Solar Cells
Volume	194
DOIs	https://doi.org/10.1016/j.solmat.2019.02.003
Publication status	Published - 2019 Jun 1

Bibliographical note

Funding Information:
This study was supported by the National Research Foundation of Korea (NRF) under the Ministry of Science, ICT & Future Planning (Basic Science Research Program (No. 2014R1A5A1009799 ), the Technology Development Program to Solve Climate Change (No. 2015M1A2A2055631 ), and Nano-Material Technology Development Program (No. 2017M3A7B4041696 )) and the Ministry of Trade, Industry and Energy , Republic of Korea (New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) (No. 20183010013820 ).

Publisher Copyright:
© 2019

Keywords

Electron transporting layer
Low temperature
Perovskite solar cells
Solution process
TiO nano-sol

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.solmat.2019.02.003

Cite this

You, M. S., Heo, J. H., Park, J. K., Moon, S. H., Park, B. J., & Im, S. H. (2019). Low temperature solution processable TiO ₂ nano-sol for electron transporting layer of flexible perovskite solar cells Solar Energy Materials and Solar Cells, 194, 1-6. https://doi.org/10.1016/j.solmat.2019.02.003

Low temperature solution processable TiO ₂ nano-sol for electron transporting layer of flexible perovskite solar cells . / You, Myung Sang; Heo, Jin Hyuck; Park, Jin Kyoung et al.
In: Solar Energy Materials and Solar Cells, Vol. 194, 01.06.2019, p. 1-6.

Research output: Contribution to journal › Article › peer-review

You, MS, Heo, JH, Park, JK, Moon, SH, Park, BJ & Im, SH 2019, ' Low temperature solution processable TiO ₂ nano-sol for electron transporting layer of flexible perovskite solar cells ', Solar Energy Materials and Solar Cells, vol. 194, pp. 1-6. https://doi.org/10.1016/j.solmat.2019.02.003

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abstract = " Low-temperature solution processable TiO 2 nano-sol for electron transporting layer (ETL) of flexible perovskite solar cells is prepared by synthesizing TiO 2 nano-sols by peptization in acidic aqueous solution and re-dispersing the TiO 2 nanoparticles in H 2 O, ethanol (EtOH), dimethylsulfoxied (DMSO), and N,N-dimethylformamide (DMF). By considering dielectric constant, zeta potential, and surface tension of solvent media, we found that the DMF is the best to form uniform TiO 2 ETL by spin-coating among them because it has low surface tension and high zeta potential. Accordingly, we could demonstrate 18.2% power conversion efficiency (PCE) for rigid glass substrate based perovskite solar cells and 15.8% PCE for flexible polymer substrate based devices by low-temperature solution process. ",

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AU - Im, Sang Hyuk

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AB - Low-temperature solution processable TiO 2 nano-sol for electron transporting layer (ETL) of flexible perovskite solar cells is prepared by synthesizing TiO 2 nano-sols by peptization in acidic aqueous solution and re-dispersing the TiO 2 nanoparticles in H 2 O, ethanol (EtOH), dimethylsulfoxied (DMSO), and N,N-dimethylformamide (DMF). By considering dielectric constant, zeta potential, and surface tension of solvent media, we found that the DMF is the best to form uniform TiO 2 ETL by spin-coating among them because it has low surface tension and high zeta potential. Accordingly, we could demonstrate 18.2% power conversion efficiency (PCE) for rigid glass substrate based perovskite solar cells and 15.8% PCE for flexible polymer substrate based devices by low-temperature solution process.

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