Density of states in locally ordered amorphous organic semiconductors: Emergence of the exponential tails
We present a simple model of the local order in amorphous organic semiconductors, which naturally produces a spatially correlated exponential density of states (DOS). The dominant contribution to the random energy landscape is provided by electrostatic contributions from dipoles or quadrupoles. An a...
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| Veröffentlicht in: | The Journal of chemical physics 2021-03, Vol.154 (12), p.124711-124711 |
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| container_title | The Journal of chemical physics |
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| creator | Novikov, S. V. |
| description | We present a simple model of the local order in amorphous organic semiconductors, which naturally produces a spatially correlated exponential density of states (DOS). The dominant contribution to the random energy landscape is provided by electrostatic contributions from dipoles or quadrupoles. An assumption of the preferable parallel orientation of neighbor quadrupoles or antiparallel orientation of dipoles directly leads to the formation of the exponential tails of the DOS even for a moderate size of the ordered domains. The insensitivity of the exponential tail formation to the details of the microstructure of the material suggests that this mechanism is rather common in amorphous organic semiconductors. |
| doi_str_mv | 10.1063/5.0045864 |
| format | Article |
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V.</creatorcontrib><title>Density of states in locally ordered amorphous organic semiconductors: Emergence of the exponential tails</title><title>The Journal of chemical physics</title><addtitle>J Chem Phys</addtitle><description>We present a simple model of the local order in amorphous organic semiconductors, which naturally produces a spatially correlated exponential density of states (DOS). The dominant contribution to the random energy landscape is provided by electrostatic contributions from dipoles or quadrupoles. An assumption of the preferable parallel orientation of neighbor quadrupoles or antiparallel orientation of dipoles directly leads to the formation of the exponential tails of the DOS even for a moderate size of the ordered domains. The insensitivity of the exponential tail formation to the details of the microstructure of the material suggests that this mechanism is rather common in amorphous organic semiconductors.</description><subject>Amorphous materials</subject><subject>Amorphous semiconductors</subject><subject>Density of states</subject><subject>Dipoles</subject><subject>Organic semiconductors</subject><subject>Quadrupoles</subject><subject>Semiconductors</subject><issn>0021-9606</issn><issn>1089-7690</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp90MtKxDAUBuAgio6XhS8gATcqVJM0SVN3Mo4XGHCj65JJTzXSJmOSgr69GWZ04cJV4PCdn5wfoWNKLimR5ZW4JIQLJfkWmlCi6qKSNdlGE0IYLWpJ5B7aj_GdEEIrxnfRXlmqvMjFBNlbcNGmL-w7HJNOELF1uPdG930ehhYCtFgPPizf_Bjz5FU7a3CEwRrv2tEkH-I1ng0QXsEZWAWlN8DwufQOXLK6x0nbPh6inU73EY427wF6uZs9Tx-K-dP94_RmXpiSq1R0Leu4MtowqkxNKWhaGio6Q4TQasFLClxpoysgsq0EZ7zKBy4WFGQHQNvyAJ2tc5fBf4wQUzPYaKDvtYN8QcMEUUJWZUUzPf1D3_0YXP7dSklBWc1YVudrZYKPMUDXLIMddPhqKGlW_Tei2fSf7ckmcVwM0P7Kn8IzuFiDaGyu23r3T9o3BeCNzA</recordid><startdate>20210328</startdate><enddate>20210328</enddate><creator>Novikov, S. V.</creator><general>American Institute of Physics</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-0500-1278</orcidid><orcidid>https://orcid.org/0000000205001278</orcidid></search><sort><creationdate>20210328</creationdate><title>Density of states in locally ordered amorphous organic semiconductors: Emergence of the exponential tails</title><author>Novikov, S. V.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c348t-fd2f48cac218c911ea13c15fc055a8b431e48aca7e06d754247606bb1e6fee1d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Amorphous materials</topic><topic>Amorphous semiconductors</topic><topic>Density of states</topic><topic>Dipoles</topic><topic>Organic semiconductors</topic><topic>Quadrupoles</topic><topic>Semiconductors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Novikov, S. 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V.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Density of states in locally ordered amorphous organic semiconductors: Emergence of the exponential tails</atitle><jtitle>The Journal of chemical physics</jtitle><addtitle>J Chem Phys</addtitle><date>2021-03-28</date><risdate>2021</risdate><volume>154</volume><issue>12</issue><spage>124711</spage><epage>124711</epage><pages>124711-124711</pages><issn>0021-9606</issn><eissn>1089-7690</eissn><coden>JCPSA6</coden><abstract>We present a simple model of the local order in amorphous organic semiconductors, which naturally produces a spatially correlated exponential density of states (DOS). The dominant contribution to the random energy landscape is provided by electrostatic contributions from dipoles or quadrupoles. 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| ispartof | The Journal of chemical physics, 2021-03, Vol.154 (12), p.124711-124711 |
| issn | 0021-9606 1089-7690 |
| language | eng |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Amorphous materials Amorphous semiconductors Density of states Dipoles Organic semiconductors Quadrupoles Semiconductors |
| title | Density of states in locally ordered amorphous organic semiconductors: Emergence of the exponential tails |
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