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A graphene-phthalocyanine hybrid as a next photoactive layer

Title
A graphene-phthalocyanine hybrid as a next photoactive layer
Author
정재윤
Keywords
NONLINEAR-OPTICAL PROPERTIES; SI-O-C; EXCITED-STATES; SOLAR-CELLS; OXIDE; FILMS; TRANSPARENT; ABSORPTION; QD
Issue Date
2017-04
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
CARBON, v. 119, page. 476-482
Abstract
Highly dispersible graphene was hybridized with a phthalocyanine derivative via covalent linkage to create a new type of donor-acceptor hybrid exhibiting photoinduced charge separation. Graphene is beneficial for the hybridization due to its easy functionalization and the unique electron accepting ability. A phthalocyanine (PC) derivative, pyrazine-based silicon phthalocyanine dichloride, possessing rich pi-conjugated macrocycle was used for the electron donating purpose. The hybrid molecule showed a significant decrease in fluorescence of pi-conjugated PC, implying an efficient photoinduced charge transfer occurring within the covalently-linked molecular structure consisting of "donor-acceptor". The graphene-PC hybrid molecule has also been demonstrated as an active layer material in organic photovoltaic device as well. Thus our results indeed underline the efficacy of the molecular level heterojunction of the covalently linked graphene-PC molecule in a single cell and will open new opportunities ahead for active layers research to go beyond conventional bulk-heterojunction (BHJ). (C) 2017 Elsevier Ltd. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0008622317304256?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/113597
ISSN
0008-6223; 1873-3891
DOI
10.1016/j.carbon.2017.04.059
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ORGANIC AND NANO ENGINEERING(유기나노공학과) > Articles
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