Spatial confinement effects on ultrathin semiconducting polymer heterojunction thin films
Abstract
Thin and ultrathin films of electroactive and photoactive polymers are of growing interest for applications in electronic and optoelectronic devices such as thin film transistors, light emitting diodes, solar cells, and xerographic photoreceptors. Although spatial confinement effects on the electronic, optical, optoelectronic, magnetic, and mechanical properties of inorganic semiconductors, metals, oxides, and ceramics are well known and understood, very little is currently known about nanoscale size effects in electroactive and photoactive polymers. Therefore, we recently initiated studies aimed at the understanding of spatial confinement effects on electroactive and photoactive nanostructured polymers and related thin film devices. We have extensively investigated layered nanoscale semiconducting polymer heterojunctions by applying several experimental techniques including photoluminescence, optical absorption, transient absorption, electroluminescence, cyclic voltammetry, and current-voltage measurements. Our findings reveal clear evidence of spatial confinement effects, including: dramatic enhancement of photoconductivity in ultrathin films; enhancement of electroluminescence efficiency and performance characteristics in nanoscale heterojunction devices; observation of novel phenomena in nanoscale devices. These spatial confinement effects in nanostructured semiconducting polymers can be understood in terms of classical charge transport and interfacial processes without invoking quantum size effects.
- Authors:
-
- Univ. of Rochester, NY (United States)
- Publication Date:
- OSTI Identifier:
- 602832
- Report Number(s):
- CONF-961108-
TRN: 98:001968-0013
- Resource Type:
- Conference
- Resource Relation:
- Conference: Annual meeting of the American Institute of Chemical Engineers (AIChE), Chicago, IL (United States), 10-15 Nov 1996; Other Information: PBD: 1996; Related Information: Is Part Of 1996 First joint topical conference on processing, structure and properties of polymeric materials; PB: 594 p.
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 14 SOLAR ENERGY; CHARGE TRANSPORT; EFFICIENCY; ELECTROLUMINESCENCE; HETEROJUNCTIONS; LIGHT EMITTING DIODES; MECHANICAL PROPERTIES; PHOTOCONDUCTIVITY; PHOTOLUMINESCENCE; POLYMERS; PROCESSING; SOLAR CELLS; THIN FILMS
Citation Formats
Zhang, Xuejun, and Jenekhe, S A. Spatial confinement effects on ultrathin semiconducting polymer heterojunction thin films. United States: N. p., 1996.
Web.
Zhang, Xuejun, & Jenekhe, S A. Spatial confinement effects on ultrathin semiconducting polymer heterojunction thin films. United States.
Zhang, Xuejun, and Jenekhe, S A. 1996.
"Spatial confinement effects on ultrathin semiconducting polymer heterojunction thin films". United States.
@article{osti_602832,
title = {Spatial confinement effects on ultrathin semiconducting polymer heterojunction thin films},
author = {Zhang, Xuejun and Jenekhe, S A},
abstractNote = {Thin and ultrathin films of electroactive and photoactive polymers are of growing interest for applications in electronic and optoelectronic devices such as thin film transistors, light emitting diodes, solar cells, and xerographic photoreceptors. Although spatial confinement effects on the electronic, optical, optoelectronic, magnetic, and mechanical properties of inorganic semiconductors, metals, oxides, and ceramics are well known and understood, very little is currently known about nanoscale size effects in electroactive and photoactive polymers. Therefore, we recently initiated studies aimed at the understanding of spatial confinement effects on electroactive and photoactive nanostructured polymers and related thin film devices. We have extensively investigated layered nanoscale semiconducting polymer heterojunctions by applying several experimental techniques including photoluminescence, optical absorption, transient absorption, electroluminescence, cyclic voltammetry, and current-voltage measurements. Our findings reveal clear evidence of spatial confinement effects, including: dramatic enhancement of photoconductivity in ultrathin films; enhancement of electroluminescence efficiency and performance characteristics in nanoscale heterojunction devices; observation of novel phenomena in nanoscale devices. These spatial confinement effects in nanostructured semiconducting polymers can be understood in terms of classical charge transport and interfacial processes without invoking quantum size effects.},
doi = {},
url = {https://www.osti.gov/biblio/602832},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 31 00:00:00 EST 1996},
month = {Tue Dec 31 00:00:00 EST 1996}
}