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Title: Lewis Acid Doping Induced Synergistic Effects on Electronic and Morphological Structure for Donor and Acceptor in Polymer Solar Cells

Journal Article · · Advanced Energy Materials
 [1];  [1];  [2];  [1];  [1];  [1]; ORCiD logo [1]
  1. State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 P. R. China
  2. State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 P. R. China, Biomolecular and Organic Electronics IFM Linköping University SE‐581 83 Linköping Sweden

Abstract Due to the attraction of optimizing the electronic structure beyond chemical synthesis, molecular doping has recently aroused wide interest in the field of organic solar cells. However, the selection of limited dopants confines its successful application. Inspired by the Lewis base characteristics of the photovoltaic materials, the Lewis acid as novel dopant is introduced in organic solar cells. In both fullerene and nonfullerene based blends, Lewis acid doping leads to increased photovoltaic performance. Detailed experiments reveal that Lewis acid doping has a synergistic effect on modifying the polymer's electronic properties and the acceptor's nanostructure even at low doping concentration, and these are simultaneously responsible for the device improvements. Based on the mechanism studies, it is proposed that the Lewis acid‐doped polymers anions produce induced dipole on the acceptor, this increases the intermolecular interaction and facilitates the morphology optimization. It is believed that the synergistic effect by Lewis acid doping greatly expands the application of doped organic solar cells, in concert with other existing methods to yield higher efficiency values.

Sponsoring Organization:
USDOE
Grant/Contract Number:
DE‐AC02‐05CH11231
OSTI ID:
1430555
Journal Information:
Advanced Energy Materials, Journal Name: Advanced Energy Materials Vol. 8 Journal Issue: 19; ISSN 1614-6832
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English
Citation Metrics:
Cited by: 58 works
Citation information provided by
Web of Science

References (36)

Highly Sensitive NH 3 Detection Based on Organic Field-Effect Transistors with Tris(pentafluorophenyl)borane as Receptor journal September 2012
Toward Over 15% Power Conversion Efficiency for Organic Solar Cells: Current Status and Perspectives journal November 2017
The Effects of Crystallinity on Charge Transport and the Structure of Sequentially Processed F 4 TCNQ-Doped Conjugated Polymer Films journal September 2017
Molecular Doping of a High Mobility Diketopyrrolopyrrole–Dithienylthieno[3,2- b ]thiophene Donor–Acceptor Copolymer with F6TCNNQ journal January 2017
p-Type Doping of Poly(3-hexylthiophene) with the Strong Lewis Acid Tris(pentafluorophenyl)borane journal September 2016
Fast charge separation in a non-fullerene organic solar cell with a small driving force journal June 2016
Influence of Interface Doping on Charge-Carrier Mobilities and Sub-Bandgap Absorption in Organic Solar Cells journal April 2015
Simultaneous cross-linking and p-doping of a polymeric semiconductor film by immersion into a phosphomolybdic acid solution for use in organic solar cells journal January 2016
Enhanced Performance of Polymeric Bulk Heterojunction Solar Cells via Molecular Doping with TFSA journal June 2015
Doping Poly(3-hexylthiophene) Nanowires with Selenophene Increases the Performance of Polymer-Nanowire Solar Cells journal August 2014
Quaternisation-polymerized N-type polyelectrolytes: synthesis, characterisation and application in high-performance polymer solar cells journal January 2017
Annealing-free highly crystalline solution-processed molecular metal oxides for efficient single-junction and tandem polymer solar cells journal January 2015
Vertical Phase Separation in Poly(3-hexylthiophene): Fullerene Derivative Blends and its Advantage for Inverted Structure Solar Cells journal April 2009
Doping of Large Ionization Potential Indenopyrazine Polymers via Lewis Acid Complexation with Tris(pentafluorophenyl)borane: A Simple Method for Improving the Performance of Organic Thin-Film Transistors journal October 2016
Remarkable Enhancement of the Hole Mobility in Several Organic Small-Molecules, Polymers, and Small-Molecule:Polymer Blend Transistors by Simple Admixing of the Lewis Acid p-Dopant B(C 6 F 5 ) 3 journal October 2017
Absolute Measurement of Domain Composition and Nanoscale Size Distribution Explains Performance in PTB7:PC 71 BM Solar Cells journal October 2012
Effect of molecular electrical doping on polyfuran based photovoltaic cells journal May 2015
Highly Efficient Low-Bandgap Polymer Solar Cells with Solution-Processed and Annealing-Free Phosphomolybdic Acid as Hole-Transport Layers journal February 2015
Recent Advances in Wide-Bandgap Photovoltaic Polymers journal March 2017
Domain Purity, Miscibility, and Molecular Orientation at Donor/Acceptor Interfaces in High Performance Organic Solar Cells: Paths to Further Improvement journal March 2013
Increasing Polymer Solar Cell Fill Factor by Trap-Filling with F4-TCNQ at Parts Per Thousand Concentration journal May 2016
Charge Photogeneration in Organic Solar Cells journal November 2010
Direct Observation of Doping Sites in Temperature-Controlled, p-Doped P3HT Thin Films by Conducting Atomic Force Microscopy journal July 2014
Small is Powerful: Recent Progress in Solution-Processed Small Molecule Solar Cells journal January 2017
Solution-based electrical doping of semiconducting polymer films over a limited depth journal December 2016
Lewis Acid Adducts of Narrow Band Gap Conjugated Polymers journal March 2011
Non-Fullerene Polymer Solar Cells Based on Alkylthio and Fluorine Substituted 2D-Conjugated Polymers Reach 9.5% Efficiency journal March 2016
Stable inverted small molecular organic solar cells using a p-doped optical spacer journal January 2015
Fullerene-Free Polymer Solar Cells with over 11% Efficiency and Excellent Thermal Stability journal April 2016
Molecular Engineering of Conjugated Polymers for Solar Cells: An Updated Report journal December 2016
New developments in non-fullerene small molecule acceptors for polymer solar cells journal January 2017
n-Type conjugated electrolytes cathode interlayer with thickness-insensitivity for highly efficient organic solar cells journal January 2017
Band Gap Control in Conjugated Oligomers via Lewis Acids journal August 2009
Abnormal intermolecular interaction between overlayer C 60 molecules due to induced dipole moments in C 60 thin films adsorbed on substrates journal May 2001
Color Tuning in Polymer Light-Emitting Diodes with Lewis Acids journal June 2012
Adding Amorphous Content to Highly Crystalline Polymer Nanowire Solar Cells Increases Performance journal May 2015