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Title: Near room-temperature direct encapsulation of organic photovoltaics by plasma-based deposition techniques

Abstract

Plasma-assisted atomic layer deposition (ALD) is used for the deposition of environmental barriers directly onto organic photovoltaic devices (OPVs) at near room temperature (30 °C). To study the effect of the ALD process on the organic materials forming the device, the precursor diffusion and intermixing at the interface during the growth of different plasma-assisted ALD inorganic barriers (i.e. Al2O3 and TiO2) onto the organic photoactive layer (P3HT:ICBA) was investigated in this paper. Depth profile x-ray photoelectron spectroscopy was used to analyze the composition of the organic/inorganic interface to investigate the infiltration of the plasma-assisted ALD precursors into the photoactive layer as a function of the precursor dimension, the process temperature, and organic layer morphology. The free volume in the photoactive layer accessible to the ALD precursor was characterized by means of ellipsometric porosimetry (EP) and spectroscopic ellipsometry as a function of temperature. The organic layer is shown to exhibit free volume broadening at high temperatures, increasing the infiltration depth of the ALD precursor into the photoactive layer. Furthermore, based on previous investigations, the intrinsic permeation properties of the inorganic layers deposited by plasma-assisted ALD were predicted from the nano-porosity content as measured by EP and found to be in themore » 10-6 gm-2 d-1 range. Insight from our studies was used to design and fabricate multilayer barriers synthesized at near-room temperature by plasma-assisted ALD in combination with plasma-enhanced CVD onto organic photovoltaic (OPVs) devices. Finally, encapsulated OPVs displayed shelf-lifetimes up to 1400 h at ambient conditions.« less

Authors:
 [1];  [2];  [2];  [2];  [3];  [4]
  1. Eindhoven Univ. of Technology (Netherlands). Dept. of Applied Physics; Dutch Polymer Inst. (DPI), Eindhoven (Netherlands)
  2. Georgia Inst. of Technology, Atlanta, GA (United States). Center for Organic Photonics and Electronics (COPE). School of Electrical and Computer Engineering
  3. Eindhoven Univ. of Technology (Netherlands). Dept. of Applied Physics; Solar Research SOLLIANCE, Eindhoven (Netherlands)
  4. Georgia Inst. of Technology, Atlanta, GA (United States). George W. Woodruff School of Mechanical Engineering. School of Materials Science and Engineering
Publication Date:
Research Org.:
Georgia Institute of Technology, Atlanta, GA (United States); Eindhoven Univ. of Technology (Netherlands)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; Office of Naval Research (ONR) (United States)
OSTI Identifier:
1438215
Alternate Identifier(s):
OSTI ID: 1334210
Grant/Contract Number:  
NA0002576; EE0004946; N00014-14-1-0580; N00014-16-1-2520; N00014-04-1-0313
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physics. D, Applied Physics
Additional Journal Information:
Journal Volume: 50; Journal Issue: 2; Journal ID: ISSN 0022-3727
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY

Citation Formats

Perrotta, Alberto, Fuentes-Hernandez, Canek, Khan, Talha M., Kippelen, Bernard, Creatore, Mariadriana, and Graham, Samuel. Near room-temperature direct encapsulation of organic photovoltaics by plasma-based deposition techniques. United States: N. p., 2016. Web. doi:10.1088/1361-6463/50/2/024003.
Perrotta, Alberto, Fuentes-Hernandez, Canek, Khan, Talha M., Kippelen, Bernard, Creatore, Mariadriana, & Graham, Samuel. Near room-temperature direct encapsulation of organic photovoltaics by plasma-based deposition techniques. United States. https://doi.org/10.1088/1361-6463/50/2/024003
Perrotta, Alberto, Fuentes-Hernandez, Canek, Khan, Talha M., Kippelen, Bernard, Creatore, Mariadriana, and Graham, Samuel. Fri . "Near room-temperature direct encapsulation of organic photovoltaics by plasma-based deposition techniques". United States. https://doi.org/10.1088/1361-6463/50/2/024003. https://www.osti.gov/servlets/purl/1438215.
@article{osti_1438215,
title = {Near room-temperature direct encapsulation of organic photovoltaics by plasma-based deposition techniques},
author = {Perrotta, Alberto and Fuentes-Hernandez, Canek and Khan, Talha M. and Kippelen, Bernard and Creatore, Mariadriana and Graham, Samuel},
abstractNote = {Plasma-assisted atomic layer deposition (ALD) is used for the deposition of environmental barriers directly onto organic photovoltaic devices (OPVs) at near room temperature (30 °C). To study the effect of the ALD process on the organic materials forming the device, the precursor diffusion and intermixing at the interface during the growth of different plasma-assisted ALD inorganic barriers (i.e. Al2O3 and TiO2) onto the organic photoactive layer (P3HT:ICBA) was investigated in this paper. Depth profile x-ray photoelectron spectroscopy was used to analyze the composition of the organic/inorganic interface to investigate the infiltration of the plasma-assisted ALD precursors into the photoactive layer as a function of the precursor dimension, the process temperature, and organic layer morphology. The free volume in the photoactive layer accessible to the ALD precursor was characterized by means of ellipsometric porosimetry (EP) and spectroscopic ellipsometry as a function of temperature. The organic layer is shown to exhibit free volume broadening at high temperatures, increasing the infiltration depth of the ALD precursor into the photoactive layer. Furthermore, based on previous investigations, the intrinsic permeation properties of the inorganic layers deposited by plasma-assisted ALD were predicted from the nano-porosity content as measured by EP and found to be in the 10-6 gm-2 d-1 range. Insight from our studies was used to design and fabricate multilayer barriers synthesized at near-room temperature by plasma-assisted ALD in combination with plasma-enhanced CVD onto organic photovoltaic (OPVs) devices. Finally, encapsulated OPVs displayed shelf-lifetimes up to 1400 h at ambient conditions.},
doi = {10.1088/1361-6463/50/2/024003},
journal = {Journal of Physics. D, Applied Physics},
number = 2,
volume = 50,
place = {United States},
year = {Fri Dec 02 00:00:00 EST 2016},
month = {Fri Dec 02 00:00:00 EST 2016}
}

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Works referencing / citing this record:

Thickness-Dependent Swelling Behavior of Vapor-Deposited Smart Polymer Thin Films
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