Research on organic solar cells (OSCs) has progressed through material innovation and device engineering. However, well-known ubiquitous intermolecular interactions, particularly their synergistic effects, have received little attention. Herein, the complicated relationship between photovoltaic conversion multidimensional interactions in active layers is investigated. These are dually regulated by side-chain isomerization end-cap engineering of acceptors. The phenylalkyl featured acceptors...

Research on fused-ring small-molecular-acceptors (SMAs) has deeply advanced the development of organic solar cells (OSCs). Compared to fruitful studies ladder-type cores and end-caps SMAs, exploration side chains is monotonous. The widely utilized alkyl aryl usually produce a conflicting association between SMAs' crystallinity miscibility. Herein, fresh idea about modification reported explore subtle balance Specifically, phenyl introduced tail chain whereby new acceptor IDIC-C4Ph reported....

Due to their high electron affinities, chemical and thermal stabilities, π‐conjugated molecules with imide/amide frameworks have received considerable attentions as promising candidates for high‐performance optoelectronic materials, particularly organic semiconductors carrier mobilities. The purpose of this Research News is give an overview recent advances in development performance based field‐effect transistors. It covers naphthalene diimide‐, perylene diimide‐ amide‐based conjugated...

Compatible polymer donor can effectively penetrate into D/A aggregations and independently optimize their orderly stacking to achieve highly efficient APSCs.

The ternary strategy has been intensively studied to improve the power conversion efficiencies of organic photovoltaics. Thereinto, location guest component plays a critical role, but few reports have devoted this concern. Hereon, distribution LA1 as acceptor in variety scenarios is reported and dominating driving forces managing operating modes are outlined. Governed by appropriate relationship compatibility, crystallinity, surface energies between host acceptors, well interfacial...

Abstract Phenyl‐C61‐butyric acid methyl ester (PCBM) remains the most commonly used electron transport layer in inverted perovskite solar cells (IPSCs). However, its insufficient electrical properties and passivation ability limit device's performance. In this study, it is demonstrated that introducing an appropriate amount of n‐type polymer N2200 into PCBM can simultaneously enhance passivate defects distributed on surface. This modification leads to improved band alignment enhanced...

Pincer-shaped non-covalent bond interactions are introduced between a small-molecule additive and polymer acceptor, effectively improving the photovoltaic performance mechanical stability of all-polymer solar cells.

Abstract Limited by large batch differences and inferior polymerization degree of current polymer acceptors, the potential high efficiency stability advantages all-polymer solar cells (all-PSCs) cannot be fully utilized. Alternatively, largely π-extended structurally definite oligomer acceptors are effective strategies to realize overall performance acceptors. Herein, we report a linear tetramer acceptor namely 4Y-BO with identical molecular skeleton comparable molecular-weight relative...

Abstract Two‐dimensional covalent organic frameworks (2D COFs) provide a unique platform for the molecular design of electronic and optoelectronic materials. Here, synthesis characterization an electroactive COF containing well‐known tetrathiafulvalene (TTF) unit is reported. The TTF‐COF crystallizes into 2D sheets with eclipsed AA stacking motif, shows high thermal stability permanent porosity. presence TTF units endows electron‐donating ability, which characterized by cyclic voltammetry....

The good planarity and small steric hindrance of PBB1-Cl can enhance the intermolecular overlapping fasten packing in active layer to improve photovoltaic performance, mechanical thermal stability OSCs.

Abstract Ternary organic solar cells (TOSCs) offer a facile and efficient approach to increase the power conversion efficiencies (PCEs). However, critical roles that guest components play in complicated ternary systems remain poorly understood. Herein, two acceptors named LA1 LA9 with differing crystallinity are investigated. The overly crystalline induces large self‐aggregates PM6:LA9 binary system, resulting lower PCE (13.12%) compared PM6:LA1 device (13.89%). Encouragingly, both verified...

To clearly show how important the impact of side chains on organic solar cells (OSCs) is, we designed three acceptors IDIC-C

Abstract Thanks to the development of acceptor–donor–acceptor (A–D–A) type electron acceptors, organic solar cells (OSCs) have achieved marvelous progress in recent years. However, a systematic investigation about structure–efficiency relationship is still highly desired better understand working mechanisms inside bulk heterojunction (BHJ). In this study, new acceptors with synergistic effect side chain and unilateral π‐bridge strategy are designed, accounting for lower energy loss, expanded...

Abstract All‐polymer solar cells (APSCs) have attracted increasing attention due to the superior stability and mechanical flexibility. However, power conversion efficiencies (PCEs) of APSCs fall behind ascribed limited efficient polymer donors ( P D s). Particularly, there are rare reports high‐performance s with ultrawide bandgaps, which indispensable maximally harvest high‐energy photons for better light utilization. Herein, significance intramolecular charge transfer quinoid resonance...

Abstract Although non‐fused ring electron acceptors (NFREAs) have received increasing attention due to their relatively low synthetic costs, the achievement of high efficiencies strongly depends on tedious pre‐ or/and post‐treatments refine active layers, which in turn greatly increase fabrication complexity and expense organic solar cells (OSCs). Nowadays most available as‐cast devices based NFREAs are below 12% efficiencies. Herein, phenylalkyl category side groups (CnPh) employed...

Star-shaped oligomer acceptor represents a promising candidate to high-performance and robust organic solar cells (OSCs). However, the limited diversity of this community acceptors leaves significant knowledge gap regarding their...

Due to high binding energy and extremely short diffusion distance of Frenkel excitons in common organic semiconductors at early stage, mechanism interface charge transfer‐mediated free carrier generation has dominated the development bulk heterojunction (BHJ) solar cells (OSCs). However, considering advancements materials device performance, it is necessary reexamine photoelectric conversion current‐stage efficient OSCs. Here, we propose that conjugated with specific three‐dimensional...

In this work, position effects of an alkylthio side chain were investigated by designing and synthesizing two copolymers based on a phenyl-substituted benzo[1,2-b:4,5-b′]dithiophene (BDTP) difluorobenzotriazole (FTAZ). The polymer the meta-position-alkylthiolated BDTP, named m-PBDTPS–FTAZ, showed relatively broader bandgap (2.00 vs 1.96 eV) lower highest occupied molecular orbital (HOMO) energy level (−5.40 −5.32 than its para-positioned structural isomeric analogue (named p-PBDTPS–FTAZ),...

Two series of new polymers with medium and wide bandgaps to match fullerene (PC71 BM) fullerene-free 3,9-bis(2-methylene-(3-(1,1-dicyanomethylene)-indanone))-5,5,11,11-tetrakis(4-hexylphenyl)-dithieno[2,3-d:2',3'-d']-s-indaceno[1,2-b:5,6-b']dithiophene (ITIC) acceptors are designed synthesized, respectively. For constructing the key donor building blocks, effective symmetry-breaking strategy is employed. common aromatic rings (thiophene benzene) chosen as one side substituted groups in...

This review summarizes the recent advances of regioregular polymer acceptors based on SMAs for all-PSCs in past three years, and guidelines future design are discussed.

Abstract Inspired by biological neural networks, the fabrication of artificial neuromorphic systems with multimodal perception capacity shows promises in overcoming “von Neumann bottleneck” and takes advantage efficient computation diverse types signals. Here, we combine a triboelectric nanogenerator an α ‐phase indium selenide ( ‐In 2 Se 3 ) optoelectronic synaptic transistor to construct tribo‐ferro‐optoelectronic device plasticity. Based on excellent ferroelectric characteristics channel,...

This study was conducted to examine expression of centromere protein B (CENPB), spindle checkpoint MAD2 (mitotic arrest deficient protein), and antiapoptotic BCL2; activities MAPK (mitogen-activated kinase) mitochondria distribution in pig oocytes during aging, their relationship with sister chromatid separation meiosis II embryo fragmentation apoptosis after activation. After immature were cultured for 40–72 h, CENPB, MAD2, tubulin, BCL2, the examined by immunoblotting. Spindles,...