Статья

Reduced Graphene Oxide/Mesoporous TiO<sub>2</sub> Nanocomposite Based Perovskite Solar Cells

Gill Sang HanDepartment of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United StatesYoung Hyun SongSchool of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon 440-746, Republic of KoreaYoung JinSchool of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon 440-746, Republic of KoreaJin‐Wook LeeDepartment of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United StatesNam‐Gyu ParkSchool of Chemical Engineering and Department of Energy Science, Sungkyunkwan University, Suwon, 440-746, KoreaBong Kyun KangSchool of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon 440-746, Republic of KoreaJung‐Kun LeeDepartment of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United StatesIn Sun ChoDepartment of Materials Science and Engineering & Energy Systems Research, Ajou University, Suwon 443-749, KoreaDae Ho YoonSKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 440-746, KoreaHyun Suk JungSchool of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea

2015en

ABI

Аннотация

We report on reduced graphene oxide (rGO)/mesoporous (mp)-TiO2 nanocomposite based mesostructured perovskite solar cells that show an improved electron transport property owing to the reduced interfacial resistance. The amount of rGO added to the TiO2 nanoparticles electron transport layer was optimized, and their impacts on film resistivity, electron diffusion, recombination time, and photovoltaic performance were investigated. The rGO/mp-TiO2 nanocomposite film reduces interfacial resistance when compared to the mp-TiO2 film, and hence, it improves charge collection efficiency. This effect significantly increases the short circuit current density and open circuit voltage. The rGO/mp-TiO2 nanocomposite film with an optimal rGO content of 0.4 vol % shows 18% higher photon conversion efficiency compared with the TiO2 nanoparticles based perovskite solar cells.

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Идентификаторы

DOI: 10.1021/acsami.5b06171

Цитирования и источники

Цитирований: 2Использованных источников: 0

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