Photomultiplication‐Type Organic Photodetectors with High EQE‐Bandwidth Product by Introducing a Perovskite Quantum Dot Interlayer
A photomultiplication (PM)‐type organic photodetector (OPD) that exploits the ionic motion in CsPbI3 perovskite quantum dots (QDs) is demonstrated. The device uses a QD monolayer as a PM‐inducing interlayer and a donor–acceptor bulk heterojunction (BHJ) layer as a photoactive layer. When the device...
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| Veröffentlicht in: | Advanced functional materials 2023-07, Vol.33 (27), p.n/a |
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| creator | Jeong, Minyoung Han, Se Gyo Sung, Woong Kim, Seunghyun Min, Jiwoo Kim, Mi Kyong Choi, Wookjin Lee, Hansol Lee, Dongki Kim, Min Cho, Kilwon |
| description | A photomultiplication (PM)‐type organic photodetector (OPD) that exploits the ionic motion in CsPbI3 perovskite quantum dots (QDs) is demonstrated. The device uses a QD monolayer as a PM‐inducing interlayer and a donor–acceptor bulk heterojunction (BHJ) layer as a photoactive layer. When the device is illuminated, negative ions in the CsPbI3 QD migrate and accumulate near the interface between the QDs and the electrode; these processes induce hole injection from the electrode and yield the PM phenomenon with an external quantum efficiency (EQE) >2000% at a 3 V applied bias. It is confirmed that the ionic motion of the CsPbI3 QDs can induce a shift in the work function of the QD/electrode interface and that the dynamics of ionic motion determines the response speed of the device. The PM OPD showed a large EQE‐bandwidth product >106 Hz with a −3 dB frequency of 125 kHz at 3 V, which is one of the highest response speeds reported for a PM OPD. The PM‐inducing strategy that exploits ionic motion of the interlayer is a potential approach to achieving high‐efficiency PM OPDs.
A photomultiplication‐type organic photodetector that exploits the ion migration in perovskite quantum dot interlayer is demonstrated. Under illumination, negative ions in the quantum dot migrate and accumulate near the quantum dot/electrode interface inducing photomultiplication which results in large external quantum efficiency and bandwidth. The relation between the bandwidth and dynamics of the ionic motion is also discussed. |
| doi_str_mv | 10.1002/adfm.202300695 |
| format | Article |
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A photomultiplication‐type organic photodetector that exploits the ion migration in perovskite quantum dot interlayer is demonstrated. Under illumination, negative ions in the quantum dot migrate and accumulate near the quantum dot/electrode interface inducing photomultiplication which results in large external quantum efficiency and bandwidth. The relation between the bandwidth and dynamics of the ionic motion is also discussed.</description><identifier>ISSN: 1616-301X</identifier><identifier>EISSN: 1616-3028</identifier><identifier>DOI: 10.1002/adfm.202300695</identifier><language>eng</language><publisher>Hoboken: Wiley Subscription Services, Inc</publisher><subject>Electrodes ; Heterojunctions ; Interlayers ; ion migration ; Materials science ; Negative ions ; organic photodetectors ; perovskite quantum dots ; Perovskites ; Photometers ; photomultiplication ; Quantum dots ; Quantum efficiency ; Work functions</subject><ispartof>Advanced functional materials, 2023-07, Vol.33 (27), p.n/a</ispartof><rights>2023 Wiley‐VCH GmbH</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3175-cfe5f6bb4e65227705e9d4380806f9a42aaf2b37afcbc366786a8a89eba55a593</citedby><cites>FETCH-LOGICAL-c3175-cfe5f6bb4e65227705e9d4380806f9a42aaf2b37afcbc366786a8a89eba55a593</cites><orcidid>0000-0002-9212-5673 ; 0000-0003-0321-3629</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.202300695$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fadfm.202300695$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids></links><search><creatorcontrib>Jeong, Minyoung</creatorcontrib><creatorcontrib>Han, Se Gyo</creatorcontrib><creatorcontrib>Sung, Woong</creatorcontrib><creatorcontrib>Kim, Seunghyun</creatorcontrib><creatorcontrib>Min, Jiwoo</creatorcontrib><creatorcontrib>Kim, Mi Kyong</creatorcontrib><creatorcontrib>Choi, Wookjin</creatorcontrib><creatorcontrib>Lee, Hansol</creatorcontrib><creatorcontrib>Lee, Dongki</creatorcontrib><creatorcontrib>Kim, Min</creatorcontrib><creatorcontrib>Cho, Kilwon</creatorcontrib><title>Photomultiplication‐Type Organic Photodetectors with High EQE‐Bandwidth Product by Introducing a Perovskite Quantum Dot Interlayer</title><title>Advanced functional materials</title><description>A photomultiplication (PM)‐type organic photodetector (OPD) that exploits the ionic motion in CsPbI3 perovskite quantum dots (QDs) is demonstrated. The device uses a QD monolayer as a PM‐inducing interlayer and a donor–acceptor bulk heterojunction (BHJ) layer as a photoactive layer. When the device is illuminated, negative ions in the CsPbI3 QD migrate and accumulate near the interface between the QDs and the electrode; these processes induce hole injection from the electrode and yield the PM phenomenon with an external quantum efficiency (EQE) >2000% at a 3 V applied bias. It is confirmed that the ionic motion of the CsPbI3 QDs can induce a shift in the work function of the QD/electrode interface and that the dynamics of ionic motion determines the response speed of the device. The PM OPD showed a large EQE‐bandwidth product >106 Hz with a −3 dB frequency of 125 kHz at 3 V, which is one of the highest response speeds reported for a PM OPD. The PM‐inducing strategy that exploits ionic motion of the interlayer is a potential approach to achieving high‐efficiency PM OPDs.
A photomultiplication‐type organic photodetector that exploits the ion migration in perovskite quantum dot interlayer is demonstrated. Under illumination, negative ions in the quantum dot migrate and accumulate near the quantum dot/electrode interface inducing photomultiplication which results in large external quantum efficiency and bandwidth. The relation between the bandwidth and dynamics of the ionic motion is also discussed.</description><subject>Electrodes</subject><subject>Heterojunctions</subject><subject>Interlayers</subject><subject>ion migration</subject><subject>Materials science</subject><subject>Negative ions</subject><subject>organic photodetectors</subject><subject>perovskite quantum dots</subject><subject>Perovskites</subject><subject>Photometers</subject><subject>photomultiplication</subject><subject>Quantum dots</subject><subject>Quantum efficiency</subject><subject>Work functions</subject><issn>1616-301X</issn><issn>1616-3028</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNqFkLtOwzAUhiMEEuWyMltiTvEldpKx9AJIIFoJJLboxHFalyQOjkOVjYmZZ-RJSCmCkelc9P3nSJ_nnRE8JBjTC8jyckgxZRiLmO95AyKI8Bmm0f5vT54OvaOmWWNMwpAFA-99vjLOlG3hdF1oCU6b6vPt46GrFbq3S6i0RN9IppySztgGbbRboWu9XKHpYtqzl1BlG531y7k1WSsdSjt0U7nvQVdLBGiurHltnrVTaNFC5doSTYzbQsoW0Cl74h3kUDTq9Kcee4-z6cP42r-9v7oZj259yUjIfZkrnos0DZTglIYh5irOAhbhCIs8hoAC5DRlIeQylUyIMBIQQRSrFDgHHrNj73x3t7bmpVWNS9amtVX_MqERoyIKeEB6arijpDVNY1We1FaXYLuE4GTrOtm6Tn5d94F4F9joQnX_0MloMrv7y34BF5eH8A</recordid><startdate>20230701</startdate><enddate>20230701</enddate><creator>Jeong, Minyoung</creator><creator>Han, Se Gyo</creator><creator>Sung, Woong</creator><creator>Kim, Seunghyun</creator><creator>Min, Jiwoo</creator><creator>Kim, Mi Kyong</creator><creator>Choi, Wookjin</creator><creator>Lee, Hansol</creator><creator>Lee, Dongki</creator><creator>Kim, Min</creator><creator>Cho, Kilwon</creator><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><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/0000-0002-9212-5673</orcidid><orcidid>https://orcid.org/0000-0003-0321-3629</orcidid></search><sort><creationdate>20230701</creationdate><title>Photomultiplication‐Type Organic Photodetectors with High EQE‐Bandwidth Product by Introducing a Perovskite Quantum Dot Interlayer</title><author>Jeong, Minyoung ; Han, Se Gyo ; Sung, Woong ; Kim, Seunghyun ; Min, Jiwoo ; Kim, Mi Kyong ; Choi, Wookjin ; Lee, Hansol ; Lee, Dongki ; Kim, Min ; Cho, Kilwon</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3175-cfe5f6bb4e65227705e9d4380806f9a42aaf2b37afcbc366786a8a89eba55a593</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Electrodes</topic><topic>Heterojunctions</topic><topic>Interlayers</topic><topic>ion migration</topic><topic>Materials science</topic><topic>Negative ions</topic><topic>organic photodetectors</topic><topic>perovskite quantum dots</topic><topic>Perovskites</topic><topic>Photometers</topic><topic>photomultiplication</topic><topic>Quantum dots</topic><topic>Quantum efficiency</topic><topic>Work functions</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jeong, Minyoung</creatorcontrib><creatorcontrib>Han, Se Gyo</creatorcontrib><creatorcontrib>Sung, Woong</creatorcontrib><creatorcontrib>Kim, Seunghyun</creatorcontrib><creatorcontrib>Min, Jiwoo</creatorcontrib><creatorcontrib>Kim, Mi Kyong</creatorcontrib><creatorcontrib>Choi, Wookjin</creatorcontrib><creatorcontrib>Lee, Hansol</creatorcontrib><creatorcontrib>Lee, Dongki</creatorcontrib><creatorcontrib>Kim, Min</creatorcontrib><creatorcontrib>Cho, Kilwon</creatorcontrib><collection>CrossRef</collection><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>Jeong, Minyoung</au><au>Han, Se Gyo</au><au>Sung, Woong</au><au>Kim, Seunghyun</au><au>Min, Jiwoo</au><au>Kim, Mi Kyong</au><au>Choi, Wookjin</au><au>Lee, Hansol</au><au>Lee, Dongki</au><au>Kim, Min</au><au>Cho, Kilwon</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Photomultiplication‐Type Organic Photodetectors with High EQE‐Bandwidth Product by Introducing a Perovskite Quantum Dot Interlayer</atitle><jtitle>Advanced functional materials</jtitle><date>2023-07-01</date><risdate>2023</risdate><volume>33</volume><issue>27</issue><epage>n/a</epage><issn>1616-301X</issn><eissn>1616-3028</eissn><abstract>A photomultiplication (PM)‐type organic photodetector (OPD) that exploits the ionic motion in CsPbI3 perovskite quantum dots (QDs) is demonstrated. The device uses a QD monolayer as a PM‐inducing interlayer and a donor–acceptor bulk heterojunction (BHJ) layer as a photoactive layer. When the device is illuminated, negative ions in the CsPbI3 QD migrate and accumulate near the interface between the QDs and the electrode; these processes induce hole injection from the electrode and yield the PM phenomenon with an external quantum efficiency (EQE) >2000% at a 3 V applied bias. It is confirmed that the ionic motion of the CsPbI3 QDs can induce a shift in the work function of the QD/electrode interface and that the dynamics of ionic motion determines the response speed of the device. The PM OPD showed a large EQE‐bandwidth product >106 Hz with a −3 dB frequency of 125 kHz at 3 V, which is one of the highest response speeds reported for a PM OPD. The PM‐inducing strategy that exploits ionic motion of the interlayer is a potential approach to achieving high‐efficiency PM OPDs.
A photomultiplication‐type organic photodetector that exploits the ion migration in perovskite quantum dot interlayer is demonstrated. Under illumination, negative ions in the quantum dot migrate and accumulate near the quantum dot/electrode interface inducing photomultiplication which results in large external quantum efficiency and bandwidth. The relation between the bandwidth and dynamics of the ionic motion is also discussed.</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1002/adfm.202300695</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0002-9212-5673</orcidid><orcidid>https://orcid.org/0000-0003-0321-3629</orcidid></addata></record> |
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| subjects | Electrodes Heterojunctions Interlayers ion migration Materials science Negative ions organic photodetectors perovskite quantum dots Perovskites Photometers photomultiplication Quantum dots Quantum efficiency Work functions |
| title | Photomultiplication‐Type Organic Photodetectors with High EQE‐Bandwidth Product by Introducing a Perovskite Quantum Dot Interlayer |
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