Photoconductivity of iodine-doped single crystals of phthalocyanine

Autor:	Francis P. Xavier, George J. Goldsmith
Rok vydání:	1995
Předmět:	Photocurrent Materials science Photoconductivity Doping Photochemistry Organic semiconductor chemistry.chemical_compound chemistry Mechanics of Materials Phthalocyanine General Materials Science Charge carrier Orders of magnitude (data) Order of magnitude
Zdroj:	Bulletin of Materials Science. 18:283-287
ISSN:	0973-7669 0250-4707
DOI:	10.1007/bf02749667
Popis:	Single crystals of metal-free phthalocyanine (H2Pc) and of copper phthalocyanine (CuPc) were grown in the presence of iodine vapour. The presence of iodine enhances the spectral dependence of photoconductivity of H2Pc in the visible region but of CuPc in the near-IR region. The dark current is decreased but the photocurrent is increased by one order of magnitude in iodine-doped H2Pc but in the case of iodine-doped CuPc both currents are increased by nearly three orders of magnitude. Introduction of iodine results in about one order of magnitude decrease in response time for both modifications. Thus the introduction of iodine into Pc crystals decreases the energy barrier for conduction and increases the drift mobility of charge carriers thereby enhancing the conductivity of the material.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f85f223bf224aa0041fbbbb0b1ccfca9 https://doi.org/10.1007/bf02749667 Zobrazit plný text záznamu Full text from SpringerLink