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Uncovering buried structure and interfaces in molecular photovoltaics
File | Description | Size | Format | |
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![]() | Accepted version | 142.82 kB | Microsoft Word | View/Open |
![]() | Supporting information | 2.48 MB | Adobe PDF | View/Open |
Title: | Uncovering buried structure and interfaces in molecular photovoltaics |
Authors: | Gilchrist, JB Basey-Fisher, TH Chang, SC Scheltens, F McComb, DW Heutz, S |
Item Type: | Journal Article |
Abstract: | The processes that generate current in organic photovoltaics are highly dependent on the micro‐ and nano‐structure in the semiconductor layers, especially at the donor‐acceptor interface. Elucidating film properties throughout the thickness of the devices is therefore key to their further development. Here, a methodology is developed to gain unprecedented insights into the structure and composition of the molecular layers within the depth of device structure using high resolution transmission electron microscopy (HRTEM). The technique was applied to three archetypical solar cell configurations consisting of copper phthalocyanine (CuPc) and C60, which have been cross‐sectioned using a focused ion beam method optimized to minimize sample damage. The HRTEM images exhibit lattice fringes in both CuPc and C60, confirming the crystallinity and texture of both materials, and offering novel insight into the growth of C60 onto molecular materials. The donor‐acceptor interface morphology is further studied using scanning transmission electron microscopy (STEM) in combination with energy dispersive X‐ray (EDX) spectroscopy, extending the scope of our methodology to amorphous heterostructures. |
Issue Date: | 5-Nov-2014 |
Date of Acceptance: | 1-Aug-2014 |
URI: | http://hdl.handle.net/10044/1/70075 |
DOI: | 10.1002/adfm.201400345 |
ISSN: | 1616-301X |
Publisher: | Wiley |
Start Page: | 6473 |
End Page: | 6483 |
Journal / Book Title: | Advanced Functional Materials |
Volume: | 24 |
Issue: | 41 |
Copyright Statement: | © 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This is the accepted version of the following article: Gilchrist, J. B., Basey‐Fisher, T. H., Chang, S. C., Scheltens, F. , McComb, D. W. and Heutz, S. (2014), Uncovering Buried Structure and Interfaces in Molecular Photovoltaics. Adv. Funct. Mater., 24: 6473-6483., which has been published in final form at https://dx.doi.org/10.1002/adfm.201400345 |
Sponsor/Funder: | Engineering & Physical Science Research Council (EPSRC) Engineering & Physical Science Research Council (EPSRC) Engineering & Physical Science Research Council (EPSRC) |
Funder's Grant Number: | EP/F039948/1 EP/F04139X/1 EP/H002022/1 |
Keywords: | Science & Technology Physical Sciences Technology Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics TRANSMISSION ELECTRON-MICROSCOPY ORGANIC THIN-FILMS POLYMER SOLAR-CELLS COPPER PHTHALOCYANINE SPECIMEN PREPARATION SAMPLE PREPARATION CRYSTAL-STRUCTURE HETEROJUNCTION PERFORMANCE FIB Science & Technology Physical Sciences Technology Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics TRANSMISSION ELECTRON-MICROSCOPY ORGANIC THIN-FILMS POLYMER SOLAR-CELLS COPPER PHTHALOCYANINE SPECIMEN PREPARATION SAMPLE PREPARATION CRYSTAL-STRUCTURE HETEROJUNCTION PERFORMANCE FIB 02 Physical Sciences 03 Chemical Sciences 09 Engineering Materials |
Publication Status: | Published |
Online Publication Date: | 2014-08-22 |
Appears in Collections: | Materials Faculty of Natural Sciences Faculty of Engineering |