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Graphene-Enhanced Polymer-Bulk Heter...

Yu, Fei.

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Graphene-Enhanced Polymer-Bulk Heterojunction Solar Cells.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Graphene-Enhanced Polymer-Bulk Heterojunction Solar Cells./
作者:	Yu, Fei.
面頁冊數:	132 p.
附註:	Source: Dissertation Abstracts International, Volume: 77-03(E), Section: B.
Contained By:	Dissertation Abstracts International77-03B(E).
標題:	Materials science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3730166
ISBN:	9781339163147

Graphene-Enhanced Polymer-Bulk Heterojunction Solar Cells.
Yu, Fei.

Graphene-Enhanced Polymer-Bulk Heterojunction Solar Cells. - 132 p.

Source: Dissertation Abstracts International, Volume: 77-03(E), Section: B.

Thesis (Ph.D.)--University of Cincinnati, 2015.

ABSTRACT: Despite the growth of polymer based photovoltaic devices in the past decade, major challenges in devices performance improvement remain unsolved. To further improve the power conversion efficiency, charge mobility in the active layer needs to be greatly improved, and a reliable method to control the donor-acceptor blend morphology to a size scale similar to exciton diffusion length is necessary. Graphene is a novel material with superior physical properties. In this thesis, graphene is prepared through a solution exfoliation process and its dimensions and properties are characterized. The interaction between conjugated polymer chains and graphene nanosheets is studied by spectroscopic methods. The effect of graphene on polymer BHJ solar cell performance and OPV device physics are discussed when relatively low weight fraction of graphene is introduced into a modified P3HT:PCBM photovoltaic devices in order to improve OPV device properties. Strong influence on active layer morphology is observed along with the introduction of graphene, which also strongly contribute to OPV device performance improvement. The morphology of active layer is systemically investigated by a variety of characterization methods, including atomic force microscope (AFM), neutron reflectivity (NR), grazing incident-angle X-ray diffraction (GIXRD). Some other efforts to further improve the film morphology are also discussed in this thesis. The goal of this thesis is to demonstrate the possibility of using graphene to manipulate the active layer morphology and to enhance the performance of polymer based bulk-heterojunction solar cells, which has great potential to replace current generation of solar cells device.

ISBN: 9781339163147Subjects--Topical Terms:

543314
Materials science.

Graphene-Enhanced Polymer-Bulk Heterojunction Solar Cells.
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