{"title":"叶绿素a薄膜的电特性","authors":"P. J. Reucroft, W. H. Simpson","doi":"10.1039/DF9715100202","DOIUrl":null,"url":null,"abstract":"Dark conductivity and photovoltaic effects have been investigated in thin film samples of chlorophyll a. Samples were fabricated by depositing monomolecular layers of chlorophyll a on to conducting glass and metal substrates. The dependence of the dark current on temperature and voltage in 10 monolayer samples at low voltages (< 500 mV) is consistent with a conductivity tunnelling process. At higher voltages the conductivity characteristics are consistent with conductivity tunnelling, Schottky emission and the Frenkel-Poole effect. An enhanced photovoltaic effect is found in chlorophyll a films (100 monolayers) composited with electron acceptor and donor materials. The results are discussed in terms of energy migration in photosynthetic units.","PeriodicalId":11262,"journal":{"name":"Discussions of The Faraday Society","volume":"1 1","pages":"202-211"},"PeriodicalIF":0.0000,"publicationDate":"1971-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"10","resultStr":"{\"title\":\"Electrical characteristics of chlorophyll a films\",\"authors\":\"P. J. Reucroft, W. H. Simpson\",\"doi\":\"10.1039/DF9715100202\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Dark conductivity and photovoltaic effects have been investigated in thin film samples of chlorophyll a. Samples were fabricated by depositing monomolecular layers of chlorophyll a on to conducting glass and metal substrates. The dependence of the dark current on temperature and voltage in 10 monolayer samples at low voltages (< 500 mV) is consistent with a conductivity tunnelling process. At higher voltages the conductivity characteristics are consistent with conductivity tunnelling, Schottky emission and the Frenkel-Poole effect. An enhanced photovoltaic effect is found in chlorophyll a films (100 monolayers) composited with electron acceptor and donor materials. The results are discussed in terms of energy migration in photosynthetic units.\",\"PeriodicalId\":11262,\"journal\":{\"name\":\"Discussions of The Faraday Society\",\"volume\":\"1 1\",\"pages\":\"202-211\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1971-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"10\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Discussions of The Faraday Society\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1039/DF9715100202\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Discussions of The Faraday Society","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1039/DF9715100202","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Dark conductivity and photovoltaic effects have been investigated in thin film samples of chlorophyll a. Samples were fabricated by depositing monomolecular layers of chlorophyll a on to conducting glass and metal substrates. The dependence of the dark current on temperature and voltage in 10 monolayer samples at low voltages (< 500 mV) is consistent with a conductivity tunnelling process. At higher voltages the conductivity characteristics are consistent with conductivity tunnelling, Schottky emission and the Frenkel-Poole effect. An enhanced photovoltaic effect is found in chlorophyll a films (100 monolayers) composited with electron acceptor and donor materials. The results are discussed in terms of energy migration in photosynthetic units.
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