Recent advances of polymer acceptors for efficient all-polymer solar cells
This review highlights design strategies, structure–property relationships, and key challenges toward advancing n-type polymer acceptors for high-performance all-polymer solar cells.
Meniscus-guided coating for organic photovoltaic cells
This review specifically focuses on the fluid flow dynamics and drying kinetics involved in the fabrication of organic photovoltaic cells via the meniscus-guided coating process.
Molecular Engineering of Benzotriazole-based polymer donors for high performance all-polymer solar cells
Communication
A self-assembled monolayer as a hole-transport layer forming a robust interface with the active layer for enhanced thermal stability in organic solar cells
We observed molecular degradation at the HTL/photoactive interface. While PEDOT:PSS exhibited phase separation, a SAM HTL showed a more stable interface, allowing the enhanced thermal stability.
Novel thiophene[3,4-b]thiophene-based polymer acceptors for high-performance all-polymer solar cells
Three thiophene[3,4-b]thiophene (TT)-based polymer acceptors have been synthesized with a polymerized small-molecule acceptor strategy for all polymer solar cells, realizing 17.07% and 18.62% for binary blend and ternary blend devices, respectively.
Discerning Morphological Evolution Under Thermal Stress in Polymerized Small Molecular Acceptor-based All Polymer Solar Cells
High-efficiency all-polymer ternary blends enable exceptional thermal stability in organic photovoltaics
We describe an all-polymeric PBQx-TF/D18/PY-IT-based organic photovoltaic device that achieves balanced charge transport and suppressed charge recombination, exhibiting excellent thermal stability with a T80 of 1530 hours at 120 °C.
Cyanobenzene-modified polymer acceptors for high-efficiency all-polymer solar cells with low energy loss
In this work, two novel polymer acceptors, P-phCN and P-BphCN, were designed and synthesized by modifying central cores with asymmetric cyanobenzene. The P-phCN-based device achieved a PCE of 17.10% with low energy loss of 0.518 eV.
Thick-film all-polymer organic solar cells: non-halogen solvent processing for efficient and stable photovoltaics
This study achieves high efficiency and stability in thick-film all-polymer OSCs (300 nm, 16.01% PCE, and T80 = 465 h), showing strong potential for industrial applications.
Photon-induced isomerization enables high-performance polymer solar cells
The introduction of isomeric components into the active layers demonstrates effective mitigation of morphological defects arising from thermodynamic immiscibility in all-polymer solar cells (all-PSCs).
Efficient and robust intrinsically stretchable organic solar cells via mechanically interlocked oligomer integration
Mechanically interlocked oligo[2]rotaxane enables stress dissipation while preserving the fibrillar morphology in conjugated polymer blend films, allowing intrinsically stretchable OSCs to retain 80% efficiency under 34% tensile strain.
A C6F5-functionalized benzimidazole acceptor enabling supramolecular fluorinated interactions for enhanced photovoltaic performance and thermal stability
The benzimidazole (BI)-centered acceptor IPF, featuring a perfluorophenyl (C6F5)-functionalized side chain, leverages fluorine–fluorine interactions to achieve enhanced OPV performance and stability.
Siloxane-decorated polymer acceptors enable humidity-tolerant air-processing and mechanical durability of all-polymer solar cells
Siloxane-decorated polymer acceptors afford all-polymer solar cells with advantages in air-processing, mechanical durability, and device stability.
Unraveling the role of crystallization kinetics for fibrillar morphology optimization in all-polymer solar cells
In situ GIWAXS/GISAXS reveal how crystallization and phase separation kinetics govern fibrillar morphology optimization, enhancing photovoltaic performance in all-polymer solar cells.
Paper
Central π-conjugated extension in quinoxaline-based small-molecule acceptors as guest components enabling high-performance ternary organic solar cells
Ternary strategies have critical roles in pursuing high efficiencies for organic solar cells (OSCs).
Dual-asymmetric backbone constructed polymerized small molecule acceptors for efficient all-polymer solar cells
Dual-asymmetric polymer acceptors with finely-tailored molecular energy levels, crystallinity, and packing are developed for the first time, achieving an efficiency of 17.28% in all-polymer solar cells.
High-performance, ambient-processable organic solar cells achieved by single terpene-based entirely eco-friendly process
We developed entirely eco-friendly organic solar cells using eucalyptol (Eu) as a single terpene solvent, achieving a record-high PCE (15.1%). The Eu processing enables fabrication in air and enhances stability, promising for sustainable production.
About this collection
All-polymer solar cells (all-PSCs) offer a promising alternative to conventional small molecule-based organic solar cells due to their many superior properties such as mechanical flexibility/stretchability and higher device stability. Recent significant successes are based on the development of high-performance polymer donors and acceptors that exhibit tunable light absorption, nanoscale bulk-heterojunction morphology, large-area fabrication capability, and long-term stability against external environmental and mechanical stresses. All these properties have greatly improved the photovoltaic performance of all-PSCs and are now in discussion for commercial applications.
This joint themed collection in ChemComm, J Mater Chem A, and J Mater Chem C, Guest Edited by Tsuyoshi Michinobu (Tokyo Insitute of Technology), Chu-Chen Chueh (National Taiwan University) and Ergang Wang (Chalmers University of Technology), brings together invited contributions showcasing all topics of all-PSCs including the molecular design and synthesis of polymer donors and acceptors, morphological studies, and stability tests