n-Type Conducting CdSe Nanocrystal Solids
A bottleneck limiting the widespread application of semiconductor nanocrystal solids is their poor conductivity. We report that the conductivity of thin films of n-type CdSe nanocrystals increases by many orders of magnitude as the occupation of the first two electronic shells,$1S_e$and$1P_e$, incre...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 2003-05, Vol.300 (5623), p.1277-1280 |
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| creator | Yu, Dong Wang, Congjun Guyot-Sionnest, Philippe |
| description | A bottleneck limiting the widespread application of semiconductor nanocrystal solids is their poor conductivity. We report that the conductivity of thin films of n-type CdSe nanocrystals increases by many orders of magnitude as the occupation of the first two electronic shells,$1S_e$and$1P_e$, increases, either by potassium or electrochemical doping. Around half-filling of the$1S_e$shell, a peak in the conductivity is observed, indicating shell-to-shell transport. Introducing conjugated ligands between nanocrystals increases the conductivities of these states to$\sim 10^{-2}$siemens per centimeter. |
| doi_str_mv | 10.1126/science.1084424 |
| format | Article |
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We report that the conductivity of thin films of n-type CdSe nanocrystals increases by many orders of magnitude as the occupation of the first two electronic shells,$1S_e$and$1P_e$, increases, either by potassium or electrochemical doping. Around half-filling of the$1S_e$shell, a peak in the conductivity is observed, indicating shell-to-shell transport. Introducing conjugated ligands between nanocrystals increases the conductivities of these states to$\sim 10^{-2}$siemens per centimeter.</description><identifier>ISSN: 0036-8075</identifier><identifier>EISSN: 1095-9203</identifier><identifier>DOI: 10.1126/science.1084424</identifier><identifier>PMID: 12764194</identifier><identifier>CODEN: SCIEAS</identifier><language>eng</language><publisher>Washington, DC: American Association for the Advancement of Science</publisher><subject>Circles ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Conductivity ; Crystals ; Electric current ; Electrodes ; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures ; Electronic transport in multilayers, nanoscale materials and structures ; Electrons ; Exact sciences and technology ; Excitons ; Infrared radiation ; Ligands ; Material films ; Nanocrystalline materials ; Nanocrystals ; Nanotechnology ; Physics ; Semiconductors ; Semiconductors (Materials) ; Technology application</subject><ispartof>Science (American Association for the Advancement of Science), 2003-05, Vol.300 (5623), p.1277-1280</ispartof><rights>Copyright 2003 American Association for the Advancement of Science</rights><rights>2003 INIST-CNRS</rights><rights>COPYRIGHT 2003 American Association for the Advancement of Science</rights><rights>COPYRIGHT 2003 American Association for the Advancement of Science</rights><rights>Copyright American Association for the Advancement of Science May 23, 2003</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c819t-9d961f635b8b016332f1ceb1e20be7d114501f4487f74f75566ef5eead2514c63</citedby><cites>FETCH-LOGICAL-c819t-9d961f635b8b016332f1ceb1e20be7d114501f4487f74f75566ef5eead2514c63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/3834087$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/3834087$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,780,784,803,2884,2885,27924,27925,58017,58250</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=14891889$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/12764194$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Yu, Dong</creatorcontrib><creatorcontrib>Wang, Congjun</creatorcontrib><creatorcontrib>Guyot-Sionnest, Philippe</creatorcontrib><title>n-Type Conducting CdSe Nanocrystal Solids</title><title>Science (American Association for the Advancement of Science)</title><addtitle>Science</addtitle><description>A bottleneck limiting the widespread application of semiconductor nanocrystal solids is their poor conductivity. We report that the conductivity of thin films of n-type CdSe nanocrystals increases by many orders of magnitude as the occupation of the first two electronic shells,$1S_e$and$1P_e$, increases, either by potassium or electrochemical doping. Around half-filling of the$1S_e$shell, a peak in the conductivity is observed, indicating shell-to-shell transport. Introducing conjugated ligands between nanocrystals increases the conductivities of these states to$\sim 10^{-2}$siemens per centimeter.</description><subject>Circles</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Conductivity</subject><subject>Crystals</subject><subject>Electric current</subject><subject>Electrodes</subject><subject>Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures</subject><subject>Electronic transport in multilayers, nanoscale materials and structures</subject><subject>Electrons</subject><subject>Exact sciences and technology</subject><subject>Excitons</subject><subject>Infrared radiation</subject><subject>Ligands</subject><subject>Material films</subject><subject>Nanocrystalline 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Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yu, Dong</au><au>Wang, Congjun</au><au>Guyot-Sionnest, Philippe</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>n-Type Conducting CdSe Nanocrystal Solids</atitle><jtitle>Science (American Association for the Advancement of Science)</jtitle><addtitle>Science</addtitle><date>2003-05-23</date><risdate>2003</risdate><volume>300</volume><issue>5623</issue><spage>1277</spage><epage>1280</epage><pages>1277-1280</pages><issn>0036-8075</issn><eissn>1095-9203</eissn><coden>SCIEAS</coden><abstract>A bottleneck limiting the widespread application of semiconductor nanocrystal solids is their poor conductivity. We report that the conductivity of thin films of n-type CdSe nanocrystals increases by many orders of magnitude as the occupation of the first two electronic shells,$1S_e$and$1P_e$, increases, either by potassium or electrochemical doping. Around half-filling of the$1S_e$shell, a peak in the conductivity is observed, indicating shell-to-shell transport. Introducing conjugated ligands between nanocrystals increases the conductivities of these states to$\sim 10^{-2}$siemens per centimeter.</abstract><cop>Washington, DC</cop><pub>American Association for the Advancement of Science</pub><pmid>12764194</pmid><doi>10.1126/science.1084424</doi><tpages>4</tpages></addata></record> |
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| subjects | Circles Condensed matter: electronic structure, electrical, magnetic, and optical properties Conductivity Crystals Electric current Electrodes Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures Electronic transport in multilayers, nanoscale materials and structures Electrons Exact sciences and technology Excitons Infrared radiation Ligands Material films Nanocrystalline materials Nanocrystals Nanotechnology Physics Semiconductors Semiconductors (Materials) Technology application |
| title | n-Type Conducting CdSe Nanocrystal Solids |
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