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Graphene oxide as dual functional interface modifier for improving wettability and retarding recombination in hybrid perovskite solar cells

Wenzhe Li, Haopeng Dong, Xudong Guo, Nan Li, Jiangwei Li, Guangda Niu, Liduo Wang*

*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

The interface between perovskite and the hole transport layer (HTL) is sensitive to photoelectric conversion properties. However, this study shows that the interface wettability of the HTL solution on a perovskite surface could be improved. To address this problem, graphene oxide (GO) with amphiphilic function was used to form a buffer layer between the perovskite and the HTL. After the GO modification, the contact angles of the HTL solution on the perovskite film decreased to zero degrees. X-ray photoelectron spectroscopy revealed that the GO interacts with the perovskite by forming Pb-O bonds, and Raman spectroscopy analysis revealed that the two-dimensional carbon-carbon bonds absorbed the hole transport material, 2,29,7,79-tetrakis-(N,N-di-p-methoxyphenyl-amine)-9,99-spirobifluorene (Spiro-MeOTAD) via π-π interactions. The GO layer improved the contact between the perovskite and HTL, resulting in an enhancement of the short circuit current (JSC). Moreover, using GO as an insulating buffer layer can retard charge recombination in solar cells, as revealed by EIS measured in dark conditions, leading to a significant increase in the open-circuit voltage (VOC) and the fill factor (FF). Consequently, the corresponding average efficiency greatly increased by 45.5%, from 10.0% to 14.5%. Therefore, application of GO as a dual-functional buffer layer on the perovskite layer is a useful strategy for preparing highly efficient hybrid perovskite solar cells.

© The Royal Society of Chemistry 2014
Original languageEnglish
Pages (from-to)20105-20111
Number of pages7
JournalJournal of Materials Chemistry A
Volume2
Issue number47
Online published16 Oct 2014
DOIs
Publication statusPublished - 21 Dec 2014
Externally publishedYes

Funding

PGC has reported advisory roles for Deciphera Pharmaceuticals, Eisai, Eli Lilly, Nektar Therapeutics, speaker’s honoraria from Eisai, Eli Lilly, Pfizer, PharmaMar, and conducted studies sponsored by Amgen Dompé, AROG Bayer, Blueprint Medicines, Eli Lilly, Daiichi Sankyo Pharma, Epizyme, GlaxoSmithKline, Novartis, Pfizer, PharmaMar; SBa has reported research support from Novartis, Incyte, Blueprint Medicines, has received honoraria or consultation fees from Novartis, Lilly, Pfizer, PharmaMar and Bayer; SBi has reported advisory/consultant roles for Lilly, Bayer, Pfizer, Novartis, Isolfol and Clinigen and conducted studies sponsored by Janssen-Cilag, Eisai and Loxo Oncology; SBo has reported honoraria and travel grants from Nanobiotix and Lilly and received travel grants from PharmaMar; IB has received research funds from Bristol-Myers Squibb, Merck Sharp & Dohme, Novartis, Roche, Amgen and has reported advisory roles for AstraZeneca, Roche, Merck Sharp & Dohme, LEO Pharma, Amgen, Bristol-Myers Squibb, Pfizer and Novartis; TB has reported honoraria from Roche and PharmaMar and advisory board and honoraria from Amgen, Bayer, Novartis, Eisai and Eli Lilly; JMB has reported consulting advisory role for PharmaMar, Lilly, Bayer, Novartis and being a member of the speaker’s bureau for PharmaMar and received travel grants from PharmaMar and Lilly; APDT is a member of the speakers’ bureau for Lilly, Pfizer and Merck Sharp & Dohme; XGDM has reported advisory role for Lilly, PharmaMar and Novartis; PD has reported conducted research sponsored by Eli Lilly; ME has participated in advisory boards for Bayer, Sobi, Lilly, Eisai and Novartis; AMF has conducted studies sponsored by Amgen Dompé, AROG Bayer, Blueprint Medicines, Eli Lilly, Daiichi Sankyo Pharma, Epizyme, GlaxoSmithKline, Novartis, Pfizer, PharmaMar; SG has received research grants and honoraria from Novartis, Pfizer and Bayer; HG has received research grants from Novartis, Daiichi Sankyo Pharma and Pfizer; HG has received research grants from Novartis, Daiichi Sankyo Pharma and Pfizer; AG has reported compensation for advisory boards from Novartis, Pfizer, Bayer, Lilly, PharmaMar and Nanobiotix, honoraria from Novartis, Lilly, PharmaMar and Nanobiotix, and research funds from PharmaMar and travel grants from PhramaMar and Nanobiotix; BH has received research grants from EuroSarc and has conducted research with EIT Health in collaboration with GE healthcare and Philips, he has received reagents from Takeda and Astellas to conduct clinical trials without direct funding; PH has reported conducting research sponsored by Novartis, Blueprint Medicines, Nanobiotix and Lilly and has received honoraria and travel grants from PharmaMar, Eisai and Lilly; HJ has reported co-appointment with Orion Pharma and holds stock in Sartar Therapeutics, Faron Pharmaceuticals and Orion Pharma; RLJ is a consultant for Adaptimmune, Blueprint Medicines, Clinigen, Eisai, Epizyme, Daichii, Deciphera, Immunedesign, Lilly, Merck and PharmaMar; IJ has received honoraria from Lilly for lectures; PJ has reported being a consultant for Stryker for the design of a new tumour prosthesis; BK has reported honoraria from Novartis, Pfizer and Bayer and advisory role for Bayer; KK has received travel grants from Novartis and Pfizer; ALC has received honoraria from Pfizer, Novartis, Lilly, Amgen, Bayer and PharmaMar; MAP has served on advisory boards for Bayer and Pfizer, and has received research grants from Novartis; PRe has served on advisory boards for Novartis, Pfizer, PharmaMar, Ariad, Merck, Deciphera, Roche, Clinigen and Lilly and has received honoraria from Novartis, Pfizer, Bayer, PharmaMar and Lilly; PRu has received honoraria for lectures from Novartis, Pfizer, Bristol-Myers Squibb, Merck Sharp & Dohme, Roche and has served as a member of advisory board for Novartis, Amgen, Merck Sharp & Dohme, Bristol-Myers Squibb, Blueprint Medicines; PS has received honoraria from Daiichi Sankyo Pharma, Eisai, Eli Lilly, Medspace, Novaris, Swedish Orphan Biovitrium, has reported consulting or advising roles for Sixth Element Capital, Adaptaimmune, Amcure, AstraZeneca, Bayer, Blueprint Medicines, Bristol-Myers Squibb, Boeringer Ingelheim, Cristal Therapeutics, Daiichi Sankyo Pharma, Eisai, Eli Lilly, Epizyme, Genzyme, Ipsen, Loxo Oncology, Medspace, Nektar, Novartis, Philogen, Piqur Therapeutics, Plexxikon, is a member of speaker’s bureau of Bayer, Eisai, Eli Lilly, GlaxoSmithKline, Novartis, PharmaMar, Swedish Orphan Biovitrium, has received research grants from Bayer, Blueprint Medicines, CoBioRes, Exelixis, Bristol-Myers Squibb, Novartis, Plexxikon, and has received travel grants from Sixth Element Capital, Adaptaimmune, Amcure, AstraZeneca, Bayer, Blueprint Medicines, Bristol-Myers Squibb, Boehringer Ingelheim, Cristal Therapeutics, Daichii Sankyo Pharma, Eisai, Eli Lilly, Epizyme, Genzyme, GlaxoSmithKline, Ipsen, Loxo Oncology, Medpace, Nektar, Novartis, PharmaMar, Philogen, Piqur Therapeutics, Plexxikon, Swedish Orphan Biovitrium; SSt has received honoraria from Eli Lilly and PharmaMar, research grants from Amgen Dompé, Advenchen, Bayer, Eli Lilly, Daiichi Sankyo Pharma, Epizyme Inc., Novartis, Pfizer and PharmarMar; travel grants from PharmaMar and has reported advisory/consultant roles for Bayer, Eli Lilly, ImmuneDesign, Maxivax and PharmaMar; WVdG has received research grants from Novartis; EW has reported travel/research grants and/or honoraria from Novartis Oncology, Milestone, Menarini, PharmaMar, Roche, Nanobiotix and Bayer; JYB has declared research grants and honoraria from Novartis, GlaxoSmithKline, Pfizer and Bayer; IL has received honoraria from Bristol-Myers Squibb, MDS, Roche, Novartis and Pfizer for scientific presentations or research; NA, RB, JVMGB, AB, EDA, AFed, VF, AFer, GG, TG, RLH, RI, SK, DAK, RP, PP, SP-N, ALP, OM, MM, MHR, AAS, SSl, KSH, MU, JW and FVC have declared no conflict of interest. SF, AH and OZ have not reported any potential conflicts of interest.

UN SDGs

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

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

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