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Title: On the Effect of Confinement on the Structure and Properties of Small-Molecular Organic Semiconductors

Abstract

Many typical organic optoelectronic devices, such as light-emitting diodes, field-effect transistors, and photovoltaic cells, use an ultrathin active layer where the organic semiconductor is confined within nanoscale dimensions. However, the question of how this spatial constraint impacts the active material is rarely addressed, although it may have a drastic influence on the phase behavior and microstructure of the active layer and hence the final performance. Here, the small-molecule semiconductor p-DTS(FBTTh 2) 2 is used as a model system to illustrate how sensitive this class of material can be to spatial confinement on device-relevant length scales. It is also shown that this effect can be exploited; it is demonstrated, for instance, that spatial confinement is an efficient tool to direct the crystal orientation and overall texture of p-DTS(FBTTh 2) 2 structures in a controlled manner, allowing for the manipulation of properties including photoluminescence and charge transport characteristics. This insight should be widely applicable as the temperature/confinement phase diagrams established via differential scanning calorimetry and grazing-incidence X-ray diffraction are used to identify specific processing routes that can be directly extrapolated to other functional organic materials, such as polymeric semiconductors, ferroelectrics or high-refractive-index polymers, to induce desired crystal textures or specific (potentially new)more » polymorphs.« less

Authors:
ORCiD logo [1];  [2];  [3];  [4];  [5];  [4]; ORCiD logo [6];  [3];  [7];  [8]
  1. Imperial College, London (United Kingdom); Univ. of Basque Country, Donostia-San Sebastian (Spain)
  2. Imperial College, London (United Kingdom)
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States); Univ. of Colorado, Boulder, CO (United States)
  4. Cornell Univ., Ithaca, NY (United States)
  5. Inst. de Estructura de la Materia IEM-CSIC, Madrid (Spain)
  6. Georgia Inst. of Technology, Atlanta, GA (United States)
  7. King Abdullah Univ. of Science and Technology (KAUST), Thuwal (Saudi Arabia). KAUST Solar Center (KSC)
  8. Imperial College, London (United Kingdom); Georgia Inst. of Technology, Atlanta, GA (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1417138
Alternate Identifier(s):
OSTI ID: 1412595
Report Number(s):
NREL/JA-5900-70320
Journal ID: ISSN 2199-160X
Grant/Contract Number:  
AC36-08GO28308
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Advanced Electronic Materials
Additional Journal Information:
Journal Volume: 4; Journal Issue: 1; Journal ID: ISSN 2199-160X
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AAO; confinement; crystallization; organic semiconductors; phase diagrams

Citation Formats

Martín, Jaime, Dyson, Matthew, Reid, Obadiah G., Li, Ruipeng, Nogales, Aurora, Smilgies, Detlef-M., Silva, Carlos, Rumbles, Garry, Amassian, Aram, and Stingelin, Natalie. On the Effect of Confinement on the Structure and Properties of Small-Molecular Organic Semiconductors. United States: N. p., 2017. Web. doi:10.1002/aelm.201700308.
Martín, Jaime, Dyson, Matthew, Reid, Obadiah G., Li, Ruipeng, Nogales, Aurora, Smilgies, Detlef-M., Silva, Carlos, Rumbles, Garry, Amassian, Aram, & Stingelin, Natalie. On the Effect of Confinement on the Structure and Properties of Small-Molecular Organic Semiconductors. United States. doi:10.1002/aelm.201700308.
Martín, Jaime, Dyson, Matthew, Reid, Obadiah G., Li, Ruipeng, Nogales, Aurora, Smilgies, Detlef-M., Silva, Carlos, Rumbles, Garry, Amassian, Aram, and Stingelin, Natalie. Mon . "On the Effect of Confinement on the Structure and Properties of Small-Molecular Organic Semiconductors". United States. doi:10.1002/aelm.201700308.
@article{osti_1417138,
title = {On the Effect of Confinement on the Structure and Properties of Small-Molecular Organic Semiconductors},
author = {Martín, Jaime and Dyson, Matthew and Reid, Obadiah G. and Li, Ruipeng and Nogales, Aurora and Smilgies, Detlef-M. and Silva, Carlos and Rumbles, Garry and Amassian, Aram and Stingelin, Natalie},
abstractNote = {Many typical organic optoelectronic devices, such as light-emitting diodes, field-effect transistors, and photovoltaic cells, use an ultrathin active layer where the organic semiconductor is confined within nanoscale dimensions. However, the question of how this spatial constraint impacts the active material is rarely addressed, although it may have a drastic influence on the phase behavior and microstructure of the active layer and hence the final performance. Here, the small-molecule semiconductor p-DTS(FBTTh2)2 is used as a model system to illustrate how sensitive this class of material can be to spatial confinement on device-relevant length scales. It is also shown that this effect can be exploited; it is demonstrated, for instance, that spatial confinement is an efficient tool to direct the crystal orientation and overall texture of p-DTS(FBTTh2)2 structures in a controlled manner, allowing for the manipulation of properties including photoluminescence and charge transport characteristics. This insight should be widely applicable as the temperature/confinement phase diagrams established via differential scanning calorimetry and grazing-incidence X-ray diffraction are used to identify specific processing routes that can be directly extrapolated to other functional organic materials, such as polymeric semiconductors, ferroelectrics or high-refractive-index polymers, to induce desired crystal textures or specific (potentially new) polymorphs.},
doi = {10.1002/aelm.201700308},
journal = {Advanced Electronic Materials},
number = 1,
volume = 4,
place = {United States},
year = {Mon Dec 11 00:00:00 EST 2017},
month = {Mon Dec 11 00:00:00 EST 2017}
}

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Works referenced in this record:

Flexible active-matrix displays and shift registers based on solution-processed organic transistors
journal, January 2004

  • Gelinck, Gerwin H.; Huitema, H. Edzer A.; van Veenendaal, Erik
  • Nature Materials, Vol. 3, Issue 2, p. 106-110
  • DOI: 10.1038/nmat1061

Tuning charge transport in solution-sheared organic semiconductors using lattice strain
journal, December 2011

  • Giri, Gaurav; Verploegen, Eric; Mannsfeld, Stefan C. B.
  • Nature, Vol. 480, Issue 7378, p. 504-508
  • DOI: 10.1038/nature10683