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Excitations in Organic Solids$
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Vladimir Agranovich

Print publication date: 2008

Print ISBN-13: 9780199234417

Published to Oxford Scholarship Online: January 2009

DOI: 10.1093/acprof:oso/9780199234417.001.0001

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Charge Transfer Excitons

Charge Transfer Excitons

Chapter:
(p.301) 11 CHARGE TRANSFER EXCITONS
Source:
Excitations in Organic Solids
Author(s):

Vladimir M. Agranovich

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199234417.003.0011

This chapter discusses the properties of charge-transfer excitons (CTEs) at interfaces and in donor-acceptor superlattices. In particular, collective properties of CTEs at donor-acceptor interface are considered. The possibility of the dielectric-conductor phase transition (cold photoconductivity) at high pumping and the photo-voltaic effect in asymmetrical donor-acceptor superlattices are demonstrated. The resonant as well as off-resonant contributions of CTEs to χ3 optical nonlinearity are also considered.

Keywords:   dielectric-conductor phase transition, cold photoconductivity

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