Organic solar cell ≈ Organic solar cell
View article
High-efficiency and air-stable P3HT-based polymer solar cells with a new non-fullerene acceptor Open
Solution-processed organic photovoltaics (OPV) offer the attractive prospect of low-cost, light-weight and environmentally benign solar energy production. The highest efficiency OPV at present use low-bandgap donor polymers, many of which …
View article
Critical review of the molecular design progress in non-fullerene electron acceptors towards commercially viable organic solar cells Open
A critical analysis of the molecular design strategies employed in the recent progress of non-fullerene electron acceptors for organic photovoltaics.
View article
Single‐Junction Binary‐Blend Nonfullerene Polymer Solar Cells with 12.1% Efficiency Open
A new fluorinated nonfullerene acceptor, ITIC‐Th1, has been designed and synthesized by introducing fluorine (F) atoms onto the end‐capping group 1,1‐dicyanomethylene‐3‐indanone (IC). On the one hand, incorporation of F would improve intra…
View article
A Wide Band Gap Polymer with a Deep Highest Occupied Molecular Orbital Level Enables 14.2% Efficiency in Polymer Solar Cells Open
To simultaneously achieve low photon energy loss ( Eloss) and broad spectral response, the molecular design of the wide band gap (WBG) donor polymer with a deep HOMO level is of critical importance in fullerene-free polymer solar cells (PS…
View article
Lessons learned from spiro-OMeTAD and PTAA in perovskite solar cells Open
Organic semiconductors have become essential parts of thin-film electronic devices, particularly as hole transport layers in perovskite solar cells where they represent one of the major bottlenecks to further enhancements in stability and …
View article
All‐Polymer Solar Cells: Recent Progress, Challenges, and Prospects Open
For over two decades bulk‐heterojunction polymer solar cell (BHJ‐PSC) research was dominated by donor:acceptor BHJ blends based on polymer donors and fullerene molecular acceptors. This situation has changed recently, with non‐fullerene PS…
View article
Efficient Organic Solar Cell with 16.88% Efficiency Enabled by Refined Acceptor Crystallization and Morphology with Improved Charge Transfer and Transport Properties Open
Single‐layered organic solar cells (OSCs) using nonfullerene acceptors have reached 16% efficiency. Such a breakthrough has inspired new sparks for the development of the next generation of OSC materials. In addition to the optimization of…
View article
Organic photovoltaic cell with 17% efficiency and superior processability Open
The development of organic photoactive materials, especially the newly emerging non-fullerene electron acceptors (NFAs), has enabled rapid progress in organic photovoltaic (OPV) cells in recent years. Although the power conversion efficien…
View article
Light Harvesting for Organic Photovoltaics Open
The field of organic photovoltaics has developed rapidly over the last 2 decades, and small solar cells with power conversion efficiencies of 13% have been demonstrated. Light absorbed in the organic layers forms tightly bound excitons tha…
View article
An Alkylated Indacenodithieno[3,2‐<i>b</i>]thiophene‐Based Nonfullerene Acceptor with High Crystallinity Exhibiting Single Junction Solar Cell Efficiencies Greater than 13% with Low Voltage Losses Open
A new synthetic route, to prepare an alkylated indacenodithieno[3,2‐ b ]thiophene‐based nonfullerene acceptor (C8‐ITIC), is reported. Compared to the reported ITIC with phenylalkyl side chains, the new acceptor C8‐ITIC exhibits a reduction…
View article
Reduced voltage losses yield 10% efficient fullerene free organic solar cells with >1 V open circuit voltages Open
Non-fullerene acceptors with optimized energy levels enable 10% efficient solar cells with reduced voltage losses <0.6 V.
View article
Solvent Additives: Key Morphology‐Directing Agents for Solution‐Processed Organic Solar Cells Open
Organic photovoltaics (OPV) have the advantage of possible fabrication by energy‐efficient and cost‐effective deposition methods, such as solution processing. Solvent additives can provide fine control of the active layer morphology of OPV…
View article
Progress in Stability of Organic Solar Cells Open
The organic solar cell (OSC) is a promising emerging low‐cost thin film photovoltaics technology. The power conversion efficiency (PCE) of OSCs has overpassed 16% for single junction and 17% for organic–organic tandem solar cells with the …
View article
Organic Solar Cells—The Path to Commercial Success Open
Organic solar cells have the potential to become the cheapest form of electricity, beating even silicon photovoltaics. This article summarizes the state of the art in the field, highlighting research challenges, mainly the need for an effi…
View article
Interfacial Materials for Organic Solar Cells: Recent Advances and Perspectives Open
Organic solar cells (OSCs) have shown great promise as low‐cost photovoltaic devices for solar energy conversion over the past decade. Interfacial engineering provides a powerful strategy to enhance efficiency and stability of OSCs. With t…
View article
Lead halide perovskites for photocatalytic organic synthesis Open
Nature is capable of storing solar energy in chemical bonds via photosynthesis through a series of C–C, C–O and C–N bond-forming reactions starting from CO 2 and light. Direct capture of solar energy for organic synthesis is a promising ap…
View article
Optical Gaps of Organic Solar Cells as a Reference for Comparing Voltage Losses Open
The voltage loss, determined by the difference between the optical gap ( E g ) and the open‐circuit voltage ( V OC ), is one of the most important parameters determining the performance of organic solar cells (OSCs). However, the variety o…
View article
A High‐Efficiency Organic Solar Cell Enabled by the Strong Intramolecular Electron Push–Pull Effect of the Nonfullerene Acceptor Open
Besides broadening of the absorption spectrum, modulating molecular energy levels, and other well‐studied properties, a stronger intramolecular electron push–pull effect also affords other advantages in nonfullerene acceptors. A strong pus…
View article
Achieving Highly Efficient Nonfullerene Organic Solar Cells with Improved Intermolecular Interaction and Open‐Circuit Voltage Open
A new acceptor–donor–acceptor‐structured nonfullerene acceptor ITCC (3,9‐bis(4‐(1,1‐dicyanomethylene)‐3‐methylene‐2‐oxo‐cyclopenta[ b ]thiophen)‐5,5,11,11‐tetrakis(4‐hexylphenyl)‐dithieno[2,3‐ d ′:2,3‐ d′ ]‐s‐indaceno[1,2‐ b :5,6‐ b′ ]‐dit…
View article
Organic Donor–Acceptor Complexes as Novel Organic Semiconductors Open
Organic donor-acceptor (DA) complexes have attracted wide attention in recent decades, resulting in the rapid development of organic binary system electronics. The design and synthesis of organic DA complexes with a variety of component st…
View article
Covalently Bound Clusters of Alpha-Substituted PDI—Rival Electron Acceptors to Fullerene for Organic Solar Cells Open
A cluster type of electron acceptor, TPB, bearing four α-perylenediimides (PDIs), was developed, in which the four PDIs form a cross-like molecular conformation while still partially conjugated with the BDT-Th core. The blend TPB:PTB7-Th f…
View article
Fused Tris(thienothiophene)‐Based Electron Acceptor with Strong Near‐Infrared Absorption for High‐Performance As‐Cast Solar Cells Open
A fused tris(thienothiophene) (3TT) building block is designed and synthesized with strong electron‐donating and molecular packing properties, where three thienothiophene units are condensed with two cyclopentadienyl rings. Based on 3TT, a…
View article
Abnormal strong burn-in degradation of highly efficient polymer solar cells caused by spinodal donor-acceptor demixing Open
The performance of organic solar cells is determined by the delicate, meticulously optimized bulk-heterojunction microstructure, which consists of finely mixed and relatively separated donor/acceptor regions. Here we demonstrate an abnorma…
View article
Donor polymer design enables efficient non-fullerene organic solar cells Open
To achieve efficient organic solar cells, the design of suitable donor–acceptor couples is crucially important. State-of-the-art donor polymers used in fullerene cells may not perform well when they are combined with non-fullerene acceptor…
View article
Doping strategies for small molecule organic hole-transport materials: impacts on perovskite solar cell performance and stability Open
Dopants for small molecule-based organic hole-transport layers impact both perovskite solar cells initial performance and long-term stability.
View article
Barrierless Free Charge Generation in the High‐Performance PM6:Y6 Bulk Heterojunction Non‐Fullerene Solar Cell Open
Organic solar cells are currently experiencing a second golden age thanks to the development of novel non‐fullerene acceptors (NFAs). Surprisingly, some of these blends exhibit high efficiencies despite a low energy offset at the heterojun…
View article
Molecular interaction induced dual fibrils towards organic solar cells with certified efficiency over 20% Open
The nanoscale fibrillar morphology, featuring long-range structural order, provides abundant interfaces for efficient exciton dissociation and high-quality pathways for effective charge transport, is a promising morphology for high perform…
View article
Crystallography, Morphology, Electronic Structure, and Transport in Non-Fullerene/Non-Indacenodithienothiophene Polymer:Y6 Solar Cells Open
Emerging nonfullerene acceptors (NFAs) with crystalline domains enable high-performance bulk heterojunction (BHJ) solar cells. Thermal annealing is known to enhance the BHJ photoactive layer morphology and performance. However, the microsc…
View article
Exciton Transport in Molecular Aggregates – From Natural Antennas to Synthetic Chromophore Systems Open
The transport of excitation energy in molecular aggregates is of crucial importance for the function of organic optoelectronic devices and next‐generation solar cells. First, this review summarizes the theoretical background of the nature …
View article
Asymmetric Electron Acceptors for High‐Efficiency and Low‐Energy‐Loss Organic Photovoltaics Open
Low energy loss and efficient charge separation under small driving forces are the prerequisites for realizing high power conversion efficiency (PCE) in organic photovoltaics (OPVs). Here, a new molecular design of nonfullerene acceptors (…