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Simultaneous Improvements in Efficiency and Stability of Organic Solar Cells via a Symmetric‐Asymmetric Dual‐Acceptor Strategy

Journal Article · · Advanced Energy Materials
 [1];  [1];  [2];  [3];  [1];  [3];  [2];  [1];  [1]
  1. State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and Functionalization International Research Center for X Polymers Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 P. R. China
  2. State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 P. R. China
  3. The Institute for Advanced Studies Wuhan University Wuhan 430072 P. R. China
Abstract

Simultaneously achieving improvements in power conversion efficiency (PCE) and stability is the main task of the current development stage of organic solar cells (OSCs). This work reports a symmetry–asymmetry dual‐acceptor (SADA) strategy to construct ternary devices, which is found to be feasible for increasing both the PCE and the operational lifetime of OSCs. In this contribution, the symmetric acceptor L8‐BO and the asymmetric acceptor BTP‐S9 are blended in equal proportions with polymer donor PM6 for the consideration of absorption spectrum complementarity and cascade energetic alignment. In addition, the features of crystallinity and miscibility of the dual‐acceptor deliver optimized morphology lead to a high PCE of 18.84%. In addition, the asymmetric acceptor BTP‐S9 with a larger dipole moment shows tighter molecular stacking and longer crystal correlation length, which favor intrinsic molecular photostability, and further consolidate the operational lifetime of OSCs when coordinated with L8‐BO. This work demonstrates the efficacy of the SADA strategy for constructing efficient and stable OSCs.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-05CH11231
OSTI ID:
2422723
Journal Information:
Advanced Energy Materials, Journal Name: Advanced Energy Materials Journal Issue: 20 Vol. 13; ISSN 1614-6832
Publisher:
Wiley
Country of Publication:
United States
Language:
English

References (50)

Reducing Voltage Losses in the A-DA′D-A Acceptor-Based Organic Solar Cells journal September 2020
Organic solar cells using oligomer acceptors for improved stability and efficiency journal November 2022
An Electron Acceptor Challenging Fullerenes for Efficient Polymer Solar Cells journal January 2015
Layer‐by‐Layer Processed Ternary Organic Photovoltaics with Efficiency over 18% journal February 2021
Tandem Organic Solar Cell with 20.2% Efficiency journal January 2022
Next-generation organic photovoltaics based on non-fullerene acceptors journal February 2018
Exploiting Ternary Blends for Improved Photostability in High-Efficiency Organic Solar Cells journal March 2020
Compromising Charge Generation and Recombination with Asymmetric Molecule for High‐Performance Binary Organic Photovoltaics with Over 18% Certified Efficiency journal January 2022
Glass Forming Acceptor Alloys for Highly Efficient and Thermally Stable Ternary Organic Solar Cells journal January 2018
Hybridization of Local Exciton and Charge-Transfer States Reduces Nonradiative Voltage Losses in Organic Solar Cells journal March 2019
Single-junction organic solar cells with over 19% efficiency enabled by a refined double-fibril network morphology journal May 2022
New Phase for Organic Solar Cell Research: Emergence of Y-Series Electron Acceptors and Their Perspectives journal April 2020
Asymmetric electron acceptor enables highly luminescent organic solar cells with certified efficiency over 18% journal May 2022
Single‐Junction Organic Solar Cells with 19.17% Efficiency Enabled by Introducing One Asymmetric Guest Acceptor journal May 2022
Desired open-circuit voltage increase enables efficiencies approaching 19% in symmetric-asymmetric molecule ternary organic photovoltaics journal March 2022
Realizing 19.05% Efficiency Polymer Solar Cells by Progressively Improving Charge Extraction and Suppressing Charge Recombination journal February 2022
High Efficiency Polymer Solar Cells with Efficient Hole Transfer at Zero Highest Occupied Molecular Orbital Offset between Methylated Polymer Donor and Brominated Acceptor journal January 2020
Manipulating Charge Transfer and Transport via Intermediary Electron Acceptor Channels Enables 19.3% Efficiency Organic Photovoltaics journal August 2022
Quantifying Losses in Open-Circuit Voltage in Solution-Processable Solar Cells journal July 2015
Dilution effect for highly efficient multiple-component organic solar cells journal December 2021
Functional Third Components in Nonfullerene Acceptor-Based Ternary Organic Solar Cells journal October 2020
14.7% Efficiency Organic Photovoltaic Cells Enabled by Active Materials with a Large Electrostatic Potential Difference journal April 2019
Achieving and Understanding of Highly Efficient Ternary Organic Photovoltaics: From Morphology and Energy Loss to Working Mechanism journal August 2022
Asymmetrical Ladder-Type Donor-Induced Polar Small Molecule Acceptor to Promote Fill Factors Approaching 77% for High-Performance Nonfullerene Polymer Solar Cells journal May 2018
Organic solar cells based on non-fullerene acceptors journal January 2018
It’s time to focus on organic solar cell stability journal November 2020
Manipulating the D:A interfacial energetics and intermolecular packing for 19.2% efficiency organic photovoltaics journal January 2022
Hot Hydrocarbon‐Solvent Slot‐Die Coating Enables High‐Efficiency Organic Solar Cells with Temperature‐Dependent Aggregation Behavior journal August 2020
Design of Non-fused Ring Acceptors toward High-Performance, Stable, and Low-Cost Organic Photovoltaics journal May 2022
Quantitative relations between interaction parameter, miscibility and function in organic solar cells journal February 2018
Blade-Cast Nonfullerene Organic Solar Cells in Air with Excellent Morphology, Efficiency, and Stability journal April 2018
A SAXS/WAXS/GISAXS Beamline with Multilayer Monochromator journal October 2010
High-efficiency organic solar cells with low non-radiative recombination loss and low energetic disorder journal January 2020
Unveiling structure-performance relationships from multi-scales in non-fullerene organic photovoltaics journal July 2021
Effect of Temperature and Illumination on the Electrical Characteristics of Polymer–Fullerene Bulk-Heterojunction Solar Cells journal January 2004
Molecular insights of exceptionally photostable electron acceptors for organic photovoltaics journal May 2021
A Well‐Mixed Phase Formed by Two Compatible Non‐Fullerene Acceptors Enables Ternary Organic Solar Cells with Efficiency over 18.6% journal July 2021
The effect of alkyl substitution position of thienyl outer side chains on photovoltaic performance of A–DA′D–A type acceptors journal January 2022
New Method for Preparing ZnO Layer for Efficient and Stable Organic Solar Cells journal December 2022
Single-Junction Organic Solar Cell with over 15% Efficiency Using Fused-Ring Acceptor with Electron-Deficient Core journal April 2019
Non-fullerene acceptors with branched side chains and improved molecular packing to exceed 18% efficiency in organic solar cells journal May 2021
An alcohol-dispersed conducting polymer complex for fully printable organic solar cells with improved stability journal April 2022
Versatile Sequential Casting Processing for Highly Efficient and Stable Binary Organic Photovoltaics journal July 2022
Stability/degradation of polymer solar cells journal July 2008
Status and prospects for ternary organic photovoltaics journal July 2015
High-Performance Organic Bulk-Heterojunction Solar Cells Based on Multiple-Donor or Multiple-Acceptor Components journal January 2018
Asymmetric Nonfullerene Small Molecule Acceptors for Organic Solar Cells journal May 2019
A unified description of non-radiative voltage losses in organic solar cells journal June 2021
High-speed sequential deposition of photoactive layers for organic solar cell manufacturing journal October 2022
Versatile ternary organic solar cells: a critical review journal January 2016