Functionalization of Graphene Oxide Films with Au and MoOx Nanoparticles as Efficient p‐Contact Electrodes for Inverted Planar Perovskite Solar Cells
A graphene oxide (GO) film is functionalized with metal (Au) and metal‐oxide (MoOx) nanoparticles (NPs) as a hole‐extraction layer for high‐performance inverted planar‐heterojunction perovskite solar cells (PSCs). These NPs can increase the work function of GO, which is confirmed with X‐ray photoele...
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description | A graphene oxide (GO) film is functionalized with metal (Au) and metal‐oxide (MoOx) nanoparticles (NPs) as a hole‐extraction layer for high‐performance inverted planar‐heterojunction perovskite solar cells (PSCs). These NPs can increase the work function of GO, which is confirmed with X‐ray photoelectron spectra, Kelvin probe force microscopy, and ultraviolet photoelectron spectra measurements. The down‐shifts of work functions lead to a decreased level of potential energy and hence increased Voc of the PSC devices. Although the GO‐AuNP film shows rapid hole extraction and increased Voc, a Jsc improvement is not observed because of localization of the extracted holes inside the AuNP that leads to rapid charge recombination, which is confirmed with transient photoelectric measurements. The power conversion efficiency (PCE) of the GO‐AuNP device attains 14.6%, which is comparable with that of the GO‐based device (14.4%). In contrast, the rapid hole extraction from perovskite to the GO‐MoOx layer does not cause trapping of holes and delocalization of holes in the GO film accelerates rapid charge transfer to the indium tin oxide substrate; charge recombination in the perovskite/GO‐MoOx interface is hence significantly retarded. The GO‐MoOx device consequently shows significantly enhanced Voc and Jsc, for which its device performance attains PCE of 16.7% with great reproducibility and enduring stability.
Two functional graphene oxide (GO) films are fabricated by coating gold nanoparticles and molybdenum oxide nanoparticles (GO‐MoOx) on the GO sheets to serve as p‐contact electrode for inverted planar perovskite solar cells. The GO‐MoOx device forms delocalized holes to retard charge recombination and atains power conversion efficiency of 16.7%. |
doi_str_mv | 10.1002/adfm.201803200 |
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Two functional graphene oxide (GO) films are fabricated by coating gold nanoparticles and molybdenum oxide nanoparticles (GO‐MoOx) on the GO sheets to serve as p‐contact electrode for inverted planar perovskite solar cells. The GO‐MoOx device forms delocalized holes to retard charge recombination and atains power conversion efficiency of 16.7%.</description><identifier>ISSN: 1616-301X</identifier><identifier>EISSN: 1616-3028</identifier><identifier>DOI: 10.1002/adfm.201803200</identifier><language>eng</language><publisher>Hoboken: Wiley Subscription Services, Inc</publisher><subject>Charge transfer ; Energy conversion efficiency ; Gold ; Graphene ; graphene oxide ; Heterojunctions ; Indium tin oxides ; Materials science ; molybdenum oxide ; Nanoparticles ; Oxide coatings ; perovskite ; Perovskites ; Photoelectricity ; Photovoltaic cells ; Potential energy ; Reproducibility ; Solar cells ; Substrates ; Ultraviolet spectra ; Work functions</subject><ispartof>Advanced functional materials, 2018-09, Vol.28 (37), p.n/a</ispartof><rights>2018 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000-0001-6113-5679</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fadfm.201803200$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fadfm.201803200$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27923,27924,45573,45574</link.rule.ids></links><search><creatorcontrib>Bhosale, Sumit S.</creatorcontrib><creatorcontrib>Jokar, Efat</creatorcontrib><creatorcontrib>Fathi, Amir</creatorcontrib><creatorcontrib>Tsai, Cheng‐Min</creatorcontrib><creatorcontrib>Wang, Chi‐Yung</creatorcontrib><creatorcontrib>Diau, Eric Wei‐Guang</creatorcontrib><title>Functionalization of Graphene Oxide Films with Au and MoOx Nanoparticles as Efficient p‐Contact Electrodes for Inverted Planar Perovskite Solar Cells</title><title>Advanced functional materials</title><description>A graphene oxide (GO) film is functionalized with metal (Au) and metal‐oxide (MoOx) nanoparticles (NPs) as a hole‐extraction layer for high‐performance inverted planar‐heterojunction perovskite solar cells (PSCs). These NPs can increase the work function of GO, which is confirmed with X‐ray photoelectron spectra, Kelvin probe force microscopy, and ultraviolet photoelectron spectra measurements. The down‐shifts of work functions lead to a decreased level of potential energy and hence increased Voc of the PSC devices. Although the GO‐AuNP film shows rapid hole extraction and increased Voc, a Jsc improvement is not observed because of localization of the extracted holes inside the AuNP that leads to rapid charge recombination, which is confirmed with transient photoelectric measurements. The power conversion efficiency (PCE) of the GO‐AuNP device attains 14.6%, which is comparable with that of the GO‐based device (14.4%). In contrast, the rapid hole extraction from perovskite to the GO‐MoOx layer does not cause trapping of holes and delocalization of holes in the GO film accelerates rapid charge transfer to the indium tin oxide substrate; charge recombination in the perovskite/GO‐MoOx interface is hence significantly retarded. The GO‐MoOx device consequently shows significantly enhanced Voc and Jsc, for which its device performance attains PCE of 16.7% with great reproducibility and enduring stability.
Two functional graphene oxide (GO) films are fabricated by coating gold nanoparticles and molybdenum oxide nanoparticles (GO‐MoOx) on the GO sheets to serve as p‐contact electrode for inverted planar perovskite solar cells. The GO‐MoOx device forms delocalized holes to retard charge recombination and atains power conversion efficiency of 16.7%.</description><subject>Charge transfer</subject><subject>Energy conversion efficiency</subject><subject>Gold</subject><subject>Graphene</subject><subject>graphene oxide</subject><subject>Heterojunctions</subject><subject>Indium tin oxides</subject><subject>Materials science</subject><subject>molybdenum oxide</subject><subject>Nanoparticles</subject><subject>Oxide coatings</subject><subject>perovskite</subject><subject>Perovskites</subject><subject>Photoelectricity</subject><subject>Photovoltaic cells</subject><subject>Potential energy</subject><subject>Reproducibility</subject><subject>Solar cells</subject><subject>Substrates</subject><subject>Ultraviolet spectra</subject><subject>Work functions</subject><issn>1616-301X</issn><issn>1616-3028</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNo9kMtKAzEUhgdR8Lp1fcB1NbfJdJaltlVQK6jgbkgzJxhNkzFJva18BHe-n09ii9LV-c_Px7_4iuKQkmNKCDtRrZkfM0L7hDNCNoodKqnsccL6m-tM77eL3ZQeCaFVxcVO8T1eeJ1t8MrZD7UKEAxMouoe0CNM32yLMLZunuDV5gcYLED5Fi7D9A2ulA-ditlqhwlUgpExVlv0Gbqfz69h8FnpDCOHOsfQLhkTIpz7F4wZW7h2yqsI1xjDS3qyGeEmuGUxROfSfrFllEt48H_3irvx6HZ41ruYTs6Hg4texzgnPcpoWc9KFJXsK9kKbPtiZnQtDeeSGFGXrZC6ZKwUQleVNEyj5kRIo2dCa8n3iqO_3S6G5wWm3DyGRVzaSA2jhDJW87JcUvUf9WodvjddtHMV3xtKmpX5ZmW-WZtvBqfjy_XHfwGDXHyS</recordid><startdate>20180912</startdate><enddate>20180912</enddate><creator>Bhosale, Sumit S.</creator><creator>Jokar, Efat</creator><creator>Fathi, Amir</creator><creator>Tsai, Cheng‐Min</creator><creator>Wang, Chi‐Yung</creator><creator>Diau, Eric Wei‐Guang</creator><general>Wiley Subscription Services, Inc</general><scope>7SP</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0001-6113-5679</orcidid></search><sort><creationdate>20180912</creationdate><title>Functionalization of Graphene Oxide Films with Au and MoOx Nanoparticles as Efficient p‐Contact Electrodes for Inverted Planar Perovskite Solar Cells</title><author>Bhosale, Sumit S. ; Jokar, Efat ; Fathi, Amir ; Tsai, Cheng‐Min ; Wang, Chi‐Yung ; Diau, Eric Wei‐Guang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p2330-12159b5e4768a6d4ed84bfc96f3360f495d46c522544c776f2cec3046fcb4cc63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Charge transfer</topic><topic>Energy conversion efficiency</topic><topic>Gold</topic><topic>Graphene</topic><topic>graphene oxide</topic><topic>Heterojunctions</topic><topic>Indium tin oxides</topic><topic>Materials science</topic><topic>molybdenum oxide</topic><topic>Nanoparticles</topic><topic>Oxide coatings</topic><topic>perovskite</topic><topic>Perovskites</topic><topic>Photoelectricity</topic><topic>Photovoltaic cells</topic><topic>Potential energy</topic><topic>Reproducibility</topic><topic>Solar cells</topic><topic>Substrates</topic><topic>Ultraviolet spectra</topic><topic>Work functions</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bhosale, Sumit S.</creatorcontrib><creatorcontrib>Jokar, Efat</creatorcontrib><creatorcontrib>Fathi, Amir</creatorcontrib><creatorcontrib>Tsai, Cheng‐Min</creatorcontrib><creatorcontrib>Wang, Chi‐Yung</creatorcontrib><creatorcontrib>Diau, Eric Wei‐Guang</creatorcontrib><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Advanced functional materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bhosale, Sumit S.</au><au>Jokar, Efat</au><au>Fathi, Amir</au><au>Tsai, Cheng‐Min</au><au>Wang, Chi‐Yung</au><au>Diau, Eric Wei‐Guang</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Functionalization of Graphene Oxide Films with Au and MoOx Nanoparticles as Efficient p‐Contact Electrodes for Inverted Planar Perovskite Solar Cells</atitle><jtitle>Advanced functional materials</jtitle><date>2018-09-12</date><risdate>2018</risdate><volume>28</volume><issue>37</issue><epage>n/a</epage><issn>1616-301X</issn><eissn>1616-3028</eissn><abstract>A graphene oxide (GO) film is functionalized with metal (Au) and metal‐oxide (MoOx) nanoparticles (NPs) as a hole‐extraction layer for high‐performance inverted planar‐heterojunction perovskite solar cells (PSCs). These NPs can increase the work function of GO, which is confirmed with X‐ray photoelectron spectra, Kelvin probe force microscopy, and ultraviolet photoelectron spectra measurements. The down‐shifts of work functions lead to a decreased level of potential energy and hence increased Voc of the PSC devices. Although the GO‐AuNP film shows rapid hole extraction and increased Voc, a Jsc improvement is not observed because of localization of the extracted holes inside the AuNP that leads to rapid charge recombination, which is confirmed with transient photoelectric measurements. The power conversion efficiency (PCE) of the GO‐AuNP device attains 14.6%, which is comparable with that of the GO‐based device (14.4%). In contrast, the rapid hole extraction from perovskite to the GO‐MoOx layer does not cause trapping of holes and delocalization of holes in the GO film accelerates rapid charge transfer to the indium tin oxide substrate; charge recombination in the perovskite/GO‐MoOx interface is hence significantly retarded. The GO‐MoOx device consequently shows significantly enhanced Voc and Jsc, for which its device performance attains PCE of 16.7% with great reproducibility and enduring stability.
Two functional graphene oxide (GO) films are fabricated by coating gold nanoparticles and molybdenum oxide nanoparticles (GO‐MoOx) on the GO sheets to serve as p‐contact electrode for inverted planar perovskite solar cells. The GO‐MoOx device forms delocalized holes to retard charge recombination and atains power conversion efficiency of 16.7%.</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1002/adfm.201803200</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0001-6113-5679</orcidid></addata></record> |
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subjects | Charge transfer Energy conversion efficiency Gold Graphene graphene oxide Heterojunctions Indium tin oxides Materials science molybdenum oxide Nanoparticles Oxide coatings perovskite Perovskites Photoelectricity Photovoltaic cells Potential energy Reproducibility Solar cells Substrates Ultraviolet spectra Work functions |
title | Functionalization of Graphene Oxide Films with Au and MoOx Nanoparticles as Efficient p‐Contact Electrodes for Inverted Planar Perovskite Solar Cells |
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