Boosting the Efficiency of Non-fullerene Organic Solar Cells via a Simple Cathode Modification Method.

This work demonstrates a simple yet effective method to significantly improve the power conversion efficiency (PCE) of highly efficient non-fullerene organic solar cells by mixing two electron transport materials. The new electron transport layer shows an energy level better aligned with the active layer and an improved morphology that could reduce the active layer-electrode contact. These improvements lead to enhanced charge extraction, better charge selectivity, suppressed exciton recombination, and finally a boosted PCE in the PM6:Y6-based solar cells. When applied in conjunction with the non-halogenated solvent-processed PM6:PY-IT-based active layer, the mixed ETL also gives rise to a leading result for binary all-polymer solar cells (PCE of >16%) with a concurrent increase in VOC, JSC, and FF.

[1]  Liangmin Yu,et al.  Aminonaphthalimide-Based Molecule with Simple Structure as Cathode Interlayer for As-Cast Organic Solar Cells. , 2021, ChemSusChem.

[2]  Yao Liu,et al.  Imidazole-Functionalized Imide Interlayers for High Performance Organic Solar Cells , 2021, ACS Energy Letters.

[3]  Q. Peng,et al.  18.77% Efficiency Organic Solar Cells Promoted by Aqueous Solution Processed Cobalt(II) Acetate Hole Transporting Layer. , 2021, Angewandte Chemie.

[4]  Bumjoon J. Kim,et al.  Electron Transport Layers Based on Oligo(ethylene glycol)-Incorporated Polymers Enabling Reproducible Fabrication of High-Performance Organic Solar Cells , 2021, Macromolecules.

[5]  Yinhua Zhou,et al.  54 cm2 Large‐Area Flexible Organic Solar Modules with Efficiency Above 13% , 2021, Advanced materials.

[6]  Bumjoon J. Kim,et al.  Regioregular Narrow‐Bandgap n‐Type Polymers with High Electron Mobility Enabling Highly Efficient All‐Polymer Solar Cells , 2021, Advanced materials.

[7]  Yong Cui,et al.  A Thiadiazole‐Based Conjugated Polymer with Ultradeep HOMO Level and Strong Electroluminescence Enables 18.6% Efficiency in Organic Solar Cell , 2021, Advanced Energy Materials.

[8]  B. Tang,et al.  Boosting Highly Efficient Hydrocarbon Solvent-Processed All-Polymer-Based Organic Solar Cells by Modulating Thin-Film Morphology. , 2021, ACS applied materials & interfaces.

[9]  F. Gao,et al.  High-performance all-polymer solar cells enabled by a novel low bandgap non-fully conjugated polymer acceptor , 2021, Science China Chemistry.

[10]  H. Xia,et al.  Nanographene–Osmapentalyne Complexes as a Cathode Interlayer in Organic Solar Cells Enhance Efficiency over 18% , 2021, Advanced materials.

[11]  Tao Yang,et al.  Air‐Processed Efficient Organic Solar Cells from Aromatic Hydrocarbon Solvent without Solvent Additive or Post‐Treatment: Insights into Solvent Effect on Morphology , 2021, ENERGY & ENVIRONMENTAL MATERIALS.

[12]  Yuan Zhang,et al.  Non-fullerene acceptors with branched side chains and improved molecular packing to exceed 18% efficiency in organic solar cells , 2021, Nature Energy.

[13]  Haijun Fan,et al.  Organic Solar Cells with 18% Efficiency Enabled by an Alloy Acceptor: A Two‐in‐One Strategy , 2021, Advanced materials.

[14]  F. Huang,et al.  High-performance polymer solar cells with efficiency over 18% enabled by asymmetric side chain engineering of non-fullerene acceptors , 2021, Science China Chemistry.

[15]  Jianhui Hou,et al.  Rational Anode Engineering Enables Progresses for Different Types of Organic Solar Cells , 2021, Advanced Energy Materials.

[16]  F. Gao,et al.  All‐polymer solar cells with over 16% efficiency and enhanced stability enabled by compatible solvent and polymer additives , 2021, Aggregate.

[17]  Zhenyu Chen,et al.  Solvent Annealing Enables 15.39% Efficiency All‐Small‐Molecule Solar Cells through Improved Molecule Interconnection and Reduced Non‐Radiative Loss , 2021, Advanced Energy Materials.

[18]  Xue-Sen Lai,et al.  High-Performance and Low-Energy Loss Organic Solar Cells with Non-fused Ring Acceptor by Alkyl Chain Engineering , 2021 .

[19]  B. Tang,et al.  Flexible Organic Solar Cells: Progress and Challenges , 2021, Small Science.

[20]  F. Huang,et al.  Nonhalogenated‐Solvent‐Processed High‐Performance All‐Polymer Solar Cell with Efficiency over 14% , 2021 .

[21]  F. Gao,et al.  16% efficiency all-polymer organic solar cells enabled by a finely tuned morphology via the design of ternary blend , 2021 .

[22]  Peng Wang,et al.  Over 15% efficiency all-small-molecule organic solar cells enabled by a C-shaped small molecule donor with tailorable asymmetric backbone , 2021 .

[23]  A. Jen,et al.  High Efficiency (15.8%) All-Polymer Solar Cells Enabled by a Regioregular Narrow Bandgap Polymer Acceptor. , 2021, Journal of the American Chemical Society.

[24]  Weiwei Li,et al.  An Organic-inorganic Hybrid Electrolyte as Cathode Interlayer for Efficient Organic Solar Cells. , 2021, Angewandte Chemie.

[25]  Yongfang Li,et al.  Achieving 16.68% efficiency ternary as-cast organic solar cells , 2021, Science China Chemistry.

[26]  H. Ade,et al.  Modulation of Morphological, Mechanical, and Photovoltaic Properties of Ternary Organic Photovoltaic Blends for Optimum Operation , 2021, Advanced Energy Materials.

[27]  Yongfang Li,et al.  Solution-Processed Transparent Conducting Electrodes for Flexible Organic Solar Cells with 16.61% Efficiency , 2021, Nano-micro letters.

[28]  Hong Wang,et al.  Enhanced short circuit current density and efficiency of ternary organic solar cells by addition of a simple copolymer third component , 2021 .

[29]  Bumjoon J. Kim,et al.  Efficient, Thermally Stable, and Mechanically Robust All‐Polymer Solar Cells Consisting of the Same Benzodithiophene Unit‐Based Polymer Acceptor and Donor with High Molecular Compatibility , 2020, Advanced Energy Materials.

[30]  Q. Zheng,et al.  Efficient Organic Solar Cells from Molecular Orientation Control of M-Series Acceptors , 2020 .

[31]  C. Zhong,et al.  Precisely Controlling the Position of Bromine on the End Group Enables Well‐Regular Polymer Acceptors for All‐Polymer Solar Cells with Efficiencies over 15% , 2020, Advanced materials.

[32]  Y. Geng,et al.  Molecular Engineering and Morphology Control of Polythiophene:Nonfullerene Acceptor Blends for High‐Performance Solar Cells , 2020, Advanced Energy Materials.

[33]  Yongfang Li,et al.  Benzotriazole Based 2D-conjugated Polymer Donors for High Performance Polymer Solar Cells , 2020, Chinese Journal of Polymer Science.

[34]  M. Zhang,et al.  Approaching 16% Efficiency in All-Small-Molecule Organic Solar Cells Based on Ternary Strategy with a Highly Crystalline Acceptor , 2020 .

[35]  Ruipeng Li,et al.  Suppressing Co‐Crystallization of Halogenated Non‐Fullerene Acceptors for Thermally Stable Ternary Solar Cells , 2020, Advanced Functional Materials.

[36]  Weihua Tang,et al.  2D Side‐Chain Engineered Asymmetric Acceptors Enabling Over 14% Efficiency and 75% Fill Factor Stable Organic Solar Cells , 2020, Advanced Functional Materials.

[37]  M. Zhang,et al.  Understanding the Effect of End Group Halogenation in Tuning Miscibility and Morphology of High‐Performance Small Molecular Acceptors , 2020 .

[38]  Q. Zheng,et al.  Control over π-π stacking of heteroheptacene-based nonfullerene acceptors for 16% efficiency polymer solar cells , 2020, National science review.

[39]  Rawad K. Hallani,et al.  Self-Assembled Monolayer Enables Hole Transport Layer-Free Organic Solar Cells with 18% Efficiency and Improved Operational Stability , 2020 .

[40]  Q. Zheng,et al.  Ladder-Type Heteroheptacenes with Different Heterocycles for Nonfullerene Acceptors. , 2020, Angewandte Chemie.

[41]  A. Jen,et al.  Adding a Third Component with Reduced Miscibility and Higher LUMO Level Enables Efficient Ternary Organic Solar Cells , 2020 .

[42]  Yao Liu,et al.  Naphthalene Diimide-Based Ionenes as Universal Interlayers for Efficient Organic Solar Cells. , 2020, Angewandte Chemie.

[43]  Rui Wang,et al.  Cathode engineering with perylene-diimide interlayer enabling over 17% efficiency single-junction organic solar cells , 2020, Nature Communications.

[44]  Yuheng Liu,et al.  Removal of siloxane (L2) from biogas using methyl-functionalised silica gel as adsorbent , 2020 .

[45]  Zhicai He,et al.  Dopamine Semiquinone Radical Doped PEDOT:PSS: Enhanced Conductivity, Work Function and Performance in Organic Solar Cells , 2020, Advanced Energy Materials.

[46]  A. Uddin,et al.  Progress in Stability of Organic Solar Cells , 2020, Advanced science.

[47]  Jianqi Zhang,et al.  15.3% efficiency all-small-molecule organic solar cells enabled by symmetric phenyl substitution , 2020, Science China Materials.

[48]  H. Yao,et al.  Realizing Ultrahigh Mechanical Flexibility and >15% Efficiency of Flexible Organic Solar Cells via a “Welding” Flexible Transparent Electrode , 2020, Advanced materials.

[49]  Shangfeng Yang,et al.  18% Efficiency organic solar cells. , 2020, Science bulletin.

[50]  Wenkai Zhong,et al.  Suppressing the excessive aggregation of nonfullerene acceptor in blade‐coated active layer by using n‐type polymer additive to achieve large‐area printed organic solar cells with efficiency over 15% , 2019, EcoMat.

[51]  Thuc‐Quyen Nguyen,et al.  Understanding the High Performance of over 15% Efficiency in Single‐Junction Bulk Heterojunction Organic Solar Cells , 2019, Advanced materials.

[52]  Bumjoon J. Kim,et al.  Recent Advances, Design Guidelines, and Prospects of All-Polymer Solar Cells. , 2019, Chemical reviews.

[53]  Jian-Dong Zhang,et al.  Design, Synthesis, and Postvapor Treatment of Neutral Fulleropyrrolidine Electron-Collecting Interlayers for High-Efficiency Inverted Polymer Solar Cells , 2019, ACS Applied Electronic Materials.

[54]  Jacek Ulanski,et al.  Single-Junction Organic Solar Cell with over 15% Efficiency Using Fused-Ring Acceptor with Electron-Deficient Core , 2019, Joule.

[55]  Yang Yang,et al.  Next-generation organic photovoltaics based on non-fullerene acceptors , 2018 .

[56]  Feng Yan,et al.  p‐Doping of Copper(I) Thiocyanate (CuSCN) Hole‐Transport Layers for High‐Performance Transistors and Organic Solar Cells , 2018, Advanced Functional Materials.

[57]  D. Gupta,et al.  Doping of Hole Transport Layer PEDOT: PSS with Pentacene for PCDTBT: PCBM Based Organic Solar Cells , 2017 .

[58]  Yue Wang,et al.  High Performance Small-Molecule Cathode Interlayer Materials with D-A-D Conjugated Central Skeletons and Side Flexible Alcohol/Water-Soluble Groups for Polymer Solar Cells. , 2016, ACS applied materials & interfaces.

[59]  Hongbin Wu,et al.  n-Type Water/Alcohol-Soluble Naphthalene Diimide-Based Conjugated Polymers for High-Performance Polymer Solar Cells. , 2016, Journal of the American Chemical Society.

[60]  P. E. Keivanidis,et al.  Understanding the Light Soaking Effects in Inverted Organic Solar Cells Functionalized with Conjugated Macroelectrolyte Electron‐Collecting Interlayers , 2015, Advanced science.

[61]  Zhenqiang Ma,et al.  Cellulose nanofibril/reduced graphene oxide/carbon nanotube hybrid aerogels for highly flexible and all-solid-state supercapacitors. , 2015, ACS applied materials & interfaces.

[62]  A. Heeger,et al.  25th Anniversary Article: Bulk Heterojunction Solar Cells: Understanding the Mechanism of Operation , 2014, Advanced materials.

[63]  E. Kymakis,et al.  Efficiency enhancement of organic photovoltaics by addition of carbon nanotubes into both active and hole transport layer , 2012 .