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Title: Photo-induced electron transfer from a conducting polymer to buckminsterfullerene: A molecular approach to high efficiency photovoltaic cells. Final report

Abstract

For photovoltaic cells made with pure conjugated polymers, energy conversion efficiencies were typically 10{sup {minus}3}--10{sup {minus}2}%, too low to be used in practical applications. The recent discovery of photoinduced electron transfer in composites of conducting polymers (as donors) and buckminsterfullerene, C{sub 60}, and its derivatives (as acceptors) provided a molecular approach to high efficiency photovoltaic conversion. Since the time scale for photoinduced charge transfer is subpicosecond, more than 10{sup 3} times faster than the radiative or nonradiative decay of photo-excitations, the quantum efficiency for charge transfer and charge separation from donor to acceptor is close to unity. Thus, photoinduced charge transfer across a donor/acceptor (D/A) interface provides an effective method of overcome early time carrier recombination in organic systems and thus to enhance the optoelectronic response of these materials. Progress toward creating bulk D/A heterojunction materials is described by summarizing two publications which resulted from this research, namely: Plastic photovoltaic cells made with donor-acceptor composites -- Enhanced carrier collection efficiency via a network of internal heterojunctions; and Charge separation and photovoltaic conversion in polymer composites with internal donor/acceptor heterojunctions.

Authors:
Publication Date:
Research Org.:
Univ. of California, Santa Barbara, CA (United States)
Sponsoring Org.:
USDOE Office of Energy Research, Washington, DC (United States)
OSTI Identifier:
656624
Report Number(s):
DOE/ER/12138-T1
ON: DE98006360; TRN: AHC29817%%180
DOE Contract Number:  
FG03-93ER12138
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 13 Aug 1998
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; PROGRESS REPORT; FULLERENES; ELECTRON TRANSFER; PHOTOVOLTAIC CONVERSION; HETEROJUNCTIONS; QUANTUM EFFICIENCY; PHOTOCONDUCTIVITY; CHARGE COLLECTION

Citation Formats

Heeger, A J. Photo-induced electron transfer from a conducting polymer to buckminsterfullerene: A molecular approach to high efficiency photovoltaic cells. Final report. United States: N. p., 1998. Web. doi:10.2172/656624.
Heeger, A J. Photo-induced electron transfer from a conducting polymer to buckminsterfullerene: A molecular approach to high efficiency photovoltaic cells. Final report. United States. https://doi.org/10.2172/656624
Heeger, A J. Thu . "Photo-induced electron transfer from a conducting polymer to buckminsterfullerene: A molecular approach to high efficiency photovoltaic cells. Final report". United States. https://doi.org/10.2172/656624. https://www.osti.gov/servlets/purl/656624.
@article{osti_656624,
title = {Photo-induced electron transfer from a conducting polymer to buckminsterfullerene: A molecular approach to high efficiency photovoltaic cells. Final report},
author = {Heeger, A J},
abstractNote = {For photovoltaic cells made with pure conjugated polymers, energy conversion efficiencies were typically 10{sup {minus}3}--10{sup {minus}2}%, too low to be used in practical applications. The recent discovery of photoinduced electron transfer in composites of conducting polymers (as donors) and buckminsterfullerene, C{sub 60}, and its derivatives (as acceptors) provided a molecular approach to high efficiency photovoltaic conversion. Since the time scale for photoinduced charge transfer is subpicosecond, more than 10{sup 3} times faster than the radiative or nonradiative decay of photo-excitations, the quantum efficiency for charge transfer and charge separation from donor to acceptor is close to unity. Thus, photoinduced charge transfer across a donor/acceptor (D/A) interface provides an effective method of overcome early time carrier recombination in organic systems and thus to enhance the optoelectronic response of these materials. Progress toward creating bulk D/A heterojunction materials is described by summarizing two publications which resulted from this research, namely: Plastic photovoltaic cells made with donor-acceptor composites -- Enhanced carrier collection efficiency via a network of internal heterojunctions; and Charge separation and photovoltaic conversion in polymer composites with internal donor/acceptor heterojunctions.},
doi = {10.2172/656624},
url = {https://www.osti.gov/biblio/656624}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {8}
}