P-type semiconductor surfactant modified zinc oxide nanorods for hybrid bulk heterojunction solar cells

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Title: P-type semiconductor surfactant modified zinc oxide nanorods for hybrid bulk heterojunction solar cells
Author(s): Ben Dkhil, S
Gaceur, M
Dachraoui, W
Hannani, D
Fall, S
Brunel, F
Wang, M
Poize, G
Mawyin, J
Shupyk, I
Martini, C
Shilova, E
Fages, F
Ishwara, T
Nelson, J
Watanabe, T
Yoshimoto, N
Margeat, O
Videlot-Ackermann, C
Ackermann, J
Item Type: Journal Article
Abstract: In this work, hybrid bulk heterojunction solar cells based on surfactant-modified zinc oxide nanorods (ZnO NRs) blended with poly-(3-hexylthiophene) (P3HT) are presented. (E)-2-cyano-3-(5′-(4-(dibutylamino)styryl)-2,2′-bithiophen-5-yl)acrylic acid (1), a p-type semiconductor, is used as grafted interfacial surfactant on ZnO NRs, named 1-ZnO NRs, in order to improve simultaneously the nanoscale morphology of the hybrid polymer blend as well as the electronic properties of the heterojunction interface. Our studies reveal that the ligand modification of ZnO NRs leads to strongly improved aggregate free P3HT/ZnO blends that show five time increased power conversion efficiency and corresponding photo-generated charge carrier transport compared to untreated ZnO NRs. From transient absorption spectroscopy, it was found that recombination kinetics were similar in the device using untreated ZnO and modified 1-ZnO NRs, respectively, pointing to a major impact of the ligand in the improvement of the blend morphology. Corresponding device optimization led to improvements of FF and Voc to values comparable to P3HT blends using fullerene acceptors, but photocurrent density of the P3HT/1-ZnO solar cells was found low even after optimization. The latter could be addressed to destruction of long range organization of P3HT induced by the presence of the ZnO NRs as well as low electron transport inside the blend.
Publication Date: 21-Jan-2016
Date of Acceptance: 4-Jan-2016
URI: http://hdl.handle.net/10044/1/45027
DOI: https://dx.doi.org/10.1016/j.solmat.2016.01.006
ISSN: 0927-0248
Publisher: Elsevier
Start Page: 608
End Page: 616
Journal / Book Title: Solar Energy Materials and Solar Cells
Volume: 159
Copyright Statement: © 2016 Elsevier B.V. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor/Funder: University Of Bath
Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: SC213X
EP/E036341/1
Keywords: Science & Technology
Technology
Physical Sciences
Energy & Fuels
Materials Science, Multidisciplinary
Physics, Applied
Materials Science
Physics
ZnO nanorods
Ligands
P3HT
Surface modification
Hybrid materials
Solar cells
Nanoscale morphology
FIELD-EFFECT TRANSISTORS
NANOCRYSTAL-POLYMER COMPOSITES
CONJUGATED POLYMER
ZNO NANORODS
PHOTOVOLTAIC DEVICES
REGIOREGULAR POLY(3-HEXYLTHIOPHENE)
TRANSPORT PROPERTIES
CONDUCTING POLYMER
EFFECT MOBILITY
MORPHOLOGY
Energy
09 Engineering
03 Chemical Sciences
02 Physical Sciences
Publication Status: Published
Appears in Collections:Physics
Experimental Solid State
Centre for Environmental Policy
Faculty of Natural Sciences



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