Pentacene thin-films obtained by thermal evaporation in high vacuum

被引：49

作者：

Puigdollers, J ^{[1
]}

Voz, C ^{[1
]}

Orpella, A ^{[1
]}

Martin, I ^{[1
]}

Vetter, M ^{[1
]}

Alcubilla, R ^{[1
]}

机构：

[1] Univ Politecn Catalunya, Dept Elect Engn, ES-08034 Barcelona, Spain

来源：

THIN SOLID FILMS | 2003年 / 427卷 / 1-2期

关键词：

pentacene; polymer; doping; diodes;

D O I：

10.1016/S0040-6090(02)01238-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pentacene thin-films were obtained by thermal evaporation in high vacuum of a pure (98%) commercially available source. All the samples were grown at room temperature (25 degreesC) and high deposition rates (>20 Angstrom/s) on Corning glass substrates. The microstructure of the pentacene thin-films evidences the coexistence of thin-film and bulk triclinic crystalline phases. The optical absorption edge close to 1.7 eV, together with the high optical absorption in the visible range, make pentacene a promising candidate for low cost solar cells. Doping series of samples were obtained by dipping pieces cut from the same pentacene sample into a solution of iodine in acetonitrile for different times (< 1 h). Thereby, room temperature dark conductivity changes from 3 X 10(-7) to 4x10(-5) Omega(-1) cm(-1). Finally, glass/SnO/pentacene/Al and glass/ZnO:Al/pentacene/Au structures were fabricated showing rectifying characteristics with on/off ratios of approximately 3 orders of magnitude. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：367 / 370

页数：4

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