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Title: Identification of an organic semiconductor superlattice structure of pentacene and perfluoro-pentacene through resonant and non-resonant X-ray scattering

Abstract

Highly crystalline and stable molecular superlattices are grown with the smallest possible stacking period using monolayers (MLs) of the organic semiconductors pentacene (PEN) and perfluoro-pentacene (PFP). Superlattice reflections in X-ray reflectivity and their energy dependence in resonant soft X-ray reflectivity measurements show that PFP and PEN MLs indeed alternate even though the coherent ordering is lost after ~ 4 ML. The observed lattice spacing of 15.9 Å in the superlattice is larger than in pure PEN and PFP films, presumably because of more upright standing molecules and lack of interdigitation between the incommensurate crystalline PEN and PFP layers. The findings are important for the development of novel organic quantum optoelectronic devices.

Authors:
 [1];  [2];  [3];  [1];  [2];  [3];  [4];  [2]
+ Show Author Affiliations
  1. Humboldt Univ. of Berlin (Germany)
  2. Univ. Tuebingen, Tuebingen (Germany)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  4. Univ. of California, Berkeley, CA (United States). Dept. of Physics and Dept. of Chemistry
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); German research foundation (DFG)
OSTI Identifier:
1378623
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 5; Journal Issue: 11; Journal ID: ISSN 2158-3226
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Superlattices; Thin film structure; Semiconductor growth; Crystal structure; Reflectivity

Citation Formats

Kowarik, S., Hinderhofer, A., Wang, C., Weber, C., Gerlach, A., Hexemer, A., Leone, S. R., and Schreiber, F. Identification of an organic semiconductor superlattice structure of pentacene and perfluoro-pentacene through resonant and non-resonant X-ray scattering. United States: N. p., 2015. Web. doi:10.1063/1.4936884.
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Kowarik, S., Hinderhofer, A., Wang, C., Weber, C., Gerlach, A., Hexemer, A., Leone, S. R., & Schreiber, F. Identification of an organic semiconductor superlattice structure of pentacene and perfluoro-pentacene through resonant and non-resonant X-ray scattering. United States. https://doi.org/10.1063/1.4936884
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Kowarik, S., Hinderhofer, A., Wang, C., Weber, C., Gerlach, A., Hexemer, A., Leone, S. R., and Schreiber, F. Mon . "Identification of an organic semiconductor superlattice structure of pentacene and perfluoro-pentacene through resonant and non-resonant X-ray scattering". United States. https://doi.org/10.1063/1.4936884. https://www.osti.gov/servlets/purl/1378623.
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@article{osti_1378623,
title = {Identification of an organic semiconductor superlattice structure of pentacene and perfluoro-pentacene through resonant and non-resonant X-ray scattering},
author = {Kowarik, S. and Hinderhofer, A. and Wang, C. and Weber, C. and Gerlach, A. and Hexemer, A. and Leone, S. R. and Schreiber, F.},
abstractNote = {Highly crystalline and stable molecular superlattices are grown with the smallest possible stacking period using monolayers (MLs) of the organic semiconductors pentacene (PEN) and perfluoro-pentacene (PFP). Superlattice reflections in X-ray reflectivity and their energy dependence in resonant soft X-ray reflectivity measurements show that PFP and PEN MLs indeed alternate even though the coherent ordering is lost after ~ 4 ML. The observed lattice spacing of 15.9 Å in the superlattice is larger than in pure PEN and PFP films, presumably because of more upright standing molecules and lack of interdigitation between the incommensurate crystalline PEN and PFP layers. The findings are important for the development of novel organic quantum optoelectronic devices.},
doi = {10.1063/1.4936884},
journal = {AIP Advances},
number = 11,
volume = 5,
place = {United States},
year = {Mon Nov 30 00:00:00 EST 2015},
month = {Mon Nov 30 00:00:00 EST 2015}
}
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https://doi.org/10.1063/1.4936884
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    • Capelli, R.; Da Como, E.; Kociok-Köhn, G.
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