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Chemical and Morphological Control of Interfacial Self-Doping for Efficient Organic Electronics

Journal Article · · Advanced Materials
 [1];  [2];  [3];  [2];  [4];  [2];  [1]
  1. Univ. of Massachusetts, Amherst, MA (United States). Polymer Science and Engineering Dept.; Beijing Univ. of Chemical Technology (China). Beijing Advanced Innovation Center for Soft Matter
  2. Univ. of Massachusetts, Amherst, MA (United States). Polymer Science and Engineering Dept.
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
+ Show Author Affiliations
Solution-based processing of materials for electrical doping of organic semiconductor interfaces is attractive for boosting the efficiency of organic electronic devices with multilayer structures. In order to simplify this process, self-doping perylene diimide (PDI)-based ionene polymers are synthesized, in which the semiconductor PDI components are embedded together with electrolyte dopants in the polymer backbone. Functionality contained within the PDI monomers suppresses their aggregation, affording self-doping interlayers with controllable thickness when processed from solution into organic photovoltaic devices (OPVs). Optimal results for interfacial self-doping lead to increased power conversion efficiencies (PCEs) of the fullerene-based OPVs, from 2.62% to 10.64%, and of the nonfullerene-based OPVs, from 3.34% to 10.59%. These PDI–ionene interlayers enable chemical and morphological control of interfacial doping and conductivity, demonstrating that the conductive channels are crucial for charge transport in doped organic semiconductor films. Using these novel interlayers with efficient doping and high conductivity, both fullerene- and nonfullerene-based OPVs are achieved with PCEs exceeding 9% over interlayer thicknesses ranging from ≈3 to 40 nm.
Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
National Science Foundation (NSF); US Department of the Navy, Office of Naval Research (ONR); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1470752
Alternate ID(s):
OSTI ID: 1423702
Journal Information:
Advanced Materials, Journal Name: Advanced Materials Journal Issue: 15 Vol. 30; ISSN 0935-9648
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (10)

Allylamine PECVD Modification of PDMS as Simple Method to Obtain Conductive Flexible Polypyrrole Thin Films journal December 2019
Multichannel Strategies to Produce Stabilized Azaphenalene Diradicals: A Predictable Model to Generate Self-Doped Cathode Interfacial Layers for Organic Photovoltaics journal November 2018
Tailoring and Modifying an Organic Electron Acceptor toward the Cathode Interlayer for Highly Efficient Organic Solar Cells journal November 2019
Efficient n-Dopants and Their Roles in Organic Electronics journal July 2018
Controlled Design of a Robust Hierarchically Porous and Hollow Carbon Fiber Textile for High‐Performance Freestanding Electrodes journal September 2019
Zwitterions for Organic/Perovskite Solar Cells, Light-Emitting Devices, and Lithium Ion Batteries: Recent Progress and Perspectives journal January 2019
Transforming Ionene Polymers into Efficient Cathode Interlayers with Pendent Fullerenes journal March 2019
Transforming Ionene Polymers into Efficient Cathode Interlayers with Pendent Fullerenes journal March 2019
Solution‐Processable Conductive Organics via Anion‐Induced n‐Doping and Their Applications in Organic and Perovskite Solar Cells journal April 2019
Perylene derivatives for solar cells and energy harvesting: a review of materials, challenges and advances journal August 2019

Figures / Tables (6)

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Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
conductivity
morphology characterizations
organic semiconductors
organic solar cells
self-doping