Taewook Park, Sangjun Lee, Mingyun Kang, Seong Hoon Yu, Geon-Hee Nam, Kyu Min Sim, Dae Sung Chung
{"title":"纳米线嵌入聚合物光电倍增二极管,EQE超过250,000%","authors":"Taewook Park, Sangjun Lee, Mingyun Kang, Seong Hoon Yu, Geon-Hee Nam, Kyu Min Sim, Dae Sung Chung","doi":"10.1016/j.cej.2021.129354","DOIUrl":null,"url":null,"abstract":"<div><p>In this work, a photomultiplication-type organic photodiode (PM-OPD) with a nanowire (NW)-embedded polymer morphology is introduced aiming prolonged carrier lifetime and enhanced carrier mobility, both of which contribute to more efficient gain generation mechanism. Growth of well-defined NWs with low structural defects within poly(3-hexylthiophene-2,5-diyl) (P3HT):<span>[6]</span>, <span>[6]</span>-phenyl-C<sub>71</sub>-butyricacid-methylester (PC<sub>71</sub>BM) (100:1 w/w) bulk-heterojunction (BHJ) active layer is achieved using a typical aging method, confirmed by UV–Vis absorption spectroscopy, atomic force microscopy and grazing incidence X-ray diffraction analyses. Transient photocurrent analyses clearly show that the NW-embedded P3HT morphology efficiently suppresses electron detrapping from localized PC<sub>71</sub>BM, leading to prolonged minority carrier recombination time. Space charge limited current study shows that gradual increase in NW density in BHJ film can lead to increase of hole mobility along the vertical direction, presumably due to increased formation of efficient percolation pathways. Thanks to such synergetic contributions of NW-embedding, remarkable increase of external quantum efficiency (EQE) up to 250,000%, responsivity up to 1300 A W<sup>−1</sup> and high specific detectivity up to 6.3 × 10<sup>13</sup> Jones can be realized by embedding an optimal amount of NW into conventional PM-OPD structured as ITO/PEDOT:PSS/BHJ/Al. This work shows the importance of nanomorphology of the active layer in PM-OPD to achieve high EQE.</p></div>","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"418 ","pages":"Article 129354"},"PeriodicalIF":13.3000,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.cej.2021.129354","citationCount":"10","resultStr":"{\"title\":\"Nanowire-embedded polymer photomultiplication photodiode with EQE over 250,000%\",\"authors\":\"Taewook Park, Sangjun Lee, Mingyun Kang, Seong Hoon Yu, Geon-Hee Nam, Kyu Min Sim, Dae Sung Chung\",\"doi\":\"10.1016/j.cej.2021.129354\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this work, a photomultiplication-type organic photodiode (PM-OPD) with a nanowire (NW)-embedded polymer morphology is introduced aiming prolonged carrier lifetime and enhanced carrier mobility, both of which contribute to more efficient gain generation mechanism. Growth of well-defined NWs with low structural defects within poly(3-hexylthiophene-2,5-diyl) (P3HT):<span>[6]</span>, <span>[6]</span>-phenyl-C<sub>71</sub>-butyricacid-methylester (PC<sub>71</sub>BM) (100:1 w/w) bulk-heterojunction (BHJ) active layer is achieved using a typical aging method, confirmed by UV–Vis absorption spectroscopy, atomic force microscopy and grazing incidence X-ray diffraction analyses. Transient photocurrent analyses clearly show that the NW-embedded P3HT morphology efficiently suppresses electron detrapping from localized PC<sub>71</sub>BM, leading to prolonged minority carrier recombination time. Space charge limited current study shows that gradual increase in NW density in BHJ film can lead to increase of hole mobility along the vertical direction, presumably due to increased formation of efficient percolation pathways. Thanks to such synergetic contributions of NW-embedding, remarkable increase of external quantum efficiency (EQE) up to 250,000%, responsivity up to 1300 A W<sup>−1</sup> and high specific detectivity up to 6.3 × 10<sup>13</sup> Jones can be realized by embedding an optimal amount of NW into conventional PM-OPD structured as ITO/PEDOT:PSS/BHJ/Al. This work shows the importance of nanomorphology of the active layer in PM-OPD to achieve high EQE.</p></div>\",\"PeriodicalId\":270,\"journal\":{\"name\":\"Chemical Engineering Journal\",\"volume\":\"418 \",\"pages\":\"Article 129354\"},\"PeriodicalIF\":13.3000,\"publicationDate\":\"2021-08-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/j.cej.2021.129354\",\"citationCount\":\"10\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical Engineering Journal\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1385894721009426\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Journal","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1385894721009426","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Nanowire-embedded polymer photomultiplication photodiode with EQE over 250,000%
In this work, a photomultiplication-type organic photodiode (PM-OPD) with a nanowire (NW)-embedded polymer morphology is introduced aiming prolonged carrier lifetime and enhanced carrier mobility, both of which contribute to more efficient gain generation mechanism. Growth of well-defined NWs with low structural defects within poly(3-hexylthiophene-2,5-diyl) (P3HT):[6], [6]-phenyl-C71-butyricacid-methylester (PC71BM) (100:1 w/w) bulk-heterojunction (BHJ) active layer is achieved using a typical aging method, confirmed by UV–Vis absorption spectroscopy, atomic force microscopy and grazing incidence X-ray diffraction analyses. Transient photocurrent analyses clearly show that the NW-embedded P3HT morphology efficiently suppresses electron detrapping from localized PC71BM, leading to prolonged minority carrier recombination time. Space charge limited current study shows that gradual increase in NW density in BHJ film can lead to increase of hole mobility along the vertical direction, presumably due to increased formation of efficient percolation pathways. Thanks to such synergetic contributions of NW-embedding, remarkable increase of external quantum efficiency (EQE) up to 250,000%, responsivity up to 1300 A W−1 and high specific detectivity up to 6.3 × 1013 Jones can be realized by embedding an optimal amount of NW into conventional PM-OPD structured as ITO/PEDOT:PSS/BHJ/Al. This work shows the importance of nanomorphology of the active layer in PM-OPD to achieve high EQE.
期刊介绍:
The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.