Fuwen Zhao

Fuwen Zhao
Chinese Academy of Sciences | CAS · Institute of Chemistry

PhD

About

31
Publications
12,513
Reads
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4,792
Citations
Citations since 2017
21 Research Items
4612 Citations
201720182019202020212022202302004006008001,000
201720182019202020212022202302004006008001,000
201720182019202020212022202302004006008001,000
201720182019202020212022202302004006008001,000
Introduction
Fuwen Zhao currently works at the Institute of Chemistry, Chinese Academy of Sciences. Fuwen does research in Materials Physics, Solid State Physics and Materials Science. Their current project is 'design and fabricate high-efficiency polymer solar cells '.

Publications

Publications (31)
Article
Full-text available
The high trap density (generally 1016–1018 cm−3) in thin films of organic semiconductors is the primary reason for the inferior charge carrier mobility and large nonradiative recombination energy loss (ΔEnr) in organic solar cells (OSCs), limiting improvement in power conversion efficiencies (PCEs). In this study, the trap density in OSCs is effici...
Article
Full-text available
The short charge carrier diffusion length (LD) (100-300 nm) in organic bulk heterojunction (BHJ) impedes the further improvement in power conversion efficiency (PCE) of organic solar cells (OSCs), especially for thick-film (> 400 nm) devices matching with industrial solution processing. Here we develop a facile method to efficiently increase LD and...
Article
Multi-modal imaging-guided synergistic photodynamic therapy (PDT) and photothermal therapy (PTT) show great benefits in cancer treatment. The phototheranostics with near-infrared (NIR) absorption, high reactive oxygen species (ROS) generation and photothermal conversion efficiency is highly desirable. Here, we designed and synthesized an “acceptor-...
Article
Full-text available
Impressive short‐circuit current density and fill factor have been achieved simultaneously in single‐junction organic solar cells (OSCs) with the emergence of high‐performance non‐fullerene acceptors. However, the power conversion efficiencies (PCEs) of OSCs still lag behind those of inorganic and perovskite solar cells, mainly due to the modest op...
Article
Full-text available
The past three years have witnessed the power conversion efficiency (PCE) of organic solar cells (OSCs) rocketing to over 18%, due to outstanding advantages of non‐fullerene acceptors (NFAs). However, large exciton binding energy (E b) caused by strong Coulombic force is still one of the main limiting factors for high‐performance OSCs. Thus, it is...
Article
Two FREAs, IUIC-O and IUIC-T, based on an undecacyclic core were developed. IUIC-T having higher extinction coefficient, affords aligned energy levels with PBDB-T, finer nanoscale morphology and more orderly molecular...
Article
Solution processible organic solar cells (OSCs) attract much attention as one of the most promising candidates for sustainable energetic techniques over the past two decades. So far, the power conversion...
Article
Full-text available
The past three years have witnessed rapid growth in the field of organic solar cells (OSCs) based on non‐fullerene acceptors (NFAs), with intensive efforts being devoted to material development, device engineering, and understanding of device physics. The power conversion efficiency of single‐junction OSCs has now reached high values of over 18%. T...
Article
Multifunctional mesoporous silica-based nanocarriers able to efficiently encapsulate drugs for stimuli-responsive release and display rapid biodegradation are highly desirable. In this work, we dope disulfide bonds and calcium into silica framework by one step method to obtain a redox and pH dual-responsive biodegradable mesoporous silica nanoparti...
Article
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In this work, four fused ring electron acceptors (FREAs), 2F-C5, 2F-C6, 2F-C8 and 2F-C10, are developed to investigate the effect of side-chain size on the molecular properties and photovoltaic performance of FREA systematically. The elongation of side-chains in the FREAs not only improves their solubility in the processing solvent, but also enhanc...
Article
Full-text available
A-D-A small molecule acceptors (SMAs) have attracted much attention, due to their merits of strong absorption, low bandgap, relatively high electron mobility and proper miscibility with donors. Benefitting from the rapid development of A-D-A SMAs, the efficiency of organic solar cells (OSCs) has been improved significantly, which excites the OSC co...
Article
Full-text available
Relative to electron donors for bulk heterojunction organic solar cells (OSCs), electron acceptors that absorb strongly in the visible and even near-infrared region are less well developed, which hinders the further development of OSCs. Fullerenes as traditional electron acceptors have relatively weak visible absorption and limited electronic tunab...
Article
Full-text available
We choose the high-performance nonfullerene acceptor ITIC-Th as an example, and incorporate electron-donating methoxy and electron-withdrawing F groups onto the terminal group 1,1-dicyanomethylene-3-indanone (IC) to construct a small library of four fused-ring electron acceptors. With this series, we systematically investigate the effects of the su...
Article
Aimed at achieving ideal morphology, illuminating morphology–performance relationship, and further improving the power conversion efficiency (PCE) of ternary polymer solar cells (TSCs), a ternary system is designed based on PTB7-Th:PffBT4T-2OD:PC71BM in this work. The PffBT4T-2OD owns large absorption cross section, proper energy levels, and good c...
Article
Full-text available
A facile, green strategy is explored to obtain mesoporous titanium glycolate (Ti(OCH2CH2O)2) via a one-pot hydrothermal reaction. The mesoporous Ti(OCH2CH2O)2 nanomaterials take on a three-dimensional V-type stripe structure with a specific surface area of 246.5 m² g⁻¹ and present an excellent adsorption capacity of toxic heavy metal ions in aqueou...
Article
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Efficient wide-bandgap (WBG) perovskite solar cells are needed to boost the efficiency of silicon solar cells to beyond Schottky-Queisser limit, but they suffer from a larger open circuit voltage (VOC ) deficit than narrower bandgap ones. Here, it is shown that one major limitation of VOC in WBG perovskite solar cells comes from the nonmatched ener...
Article
Full-text available
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 intramolecular interaction, enhance the push–pull effect between the donor unit indacenodithieno[3,2-b]thiophene and...
Article
Full-text available
We design and synthesize four fused-ring electron acceptors based on 6,6,12,12-tetrakis(4-hexylphenyl)-indacenobis(dithieno[3,2-b;2',3'-d]thiophene) as the electron-rich unit and 1,1-dicyanomethylene-3-indanones with 0 to 2 fluorine substituents as the electron-deficient units. These four molecules exhibit broad (550-850 nm) and strong absorption w...
Article
Five polymer donors with distinct chemical structures and different electronic properties are surveyed in a planar and narrow-bandgap fused-ring electron acceptor (IDIC)-based organic solar cells, which exhibit power conversion efficiencies of up to 11%.
Article
Full-text available
A fused-ring electron acceptor IDT-2BR1 based on indacenodithiophene core with hexyl side-chains flanked by benzothiadiazole rhodanine was designed and synthesized. In comparison with its counterpart with hexylphenyl side-chains (IDT-2BR), IDT-2BR1 exhibits higher highest occupied molecular orbital (HOMO) energy but similar lowest unoccupied molecu...
Article
Full-text available
It is important to maintain a reactive oxygen species (ROS) balance in organisms; thus, a valid ROS scavenger with good biocompatibility is urgently required. To prepare a high-efficiency ROS scavenger, multiple ethylenediamine (EDA) groups are bonded for the first time to a metallofullerene Gd@C82 to obtain water-soluble Gd@C82-(EDA)8 nanoparticle...
Article
The structure evolution of oligomer fused-ring electron acceptors (FREAs) toward high efficiency of as-cast polymer solar cells (PSCs) is reported. First, a series of FREAs (IC-(1-3)IDT-IC) based on indacenodithiophene (IDT) oligomers as cores are designed and synthesized, effects of IDT number (1-3) on their basic optical and electronic properties...
Article
Self-doped and crown-ether functionalized fullerene PCMI:K+ works well as a cathode buffer layer in polymer solar cells based on PTB7-Th, with a power conversion efficiency (PCE) of 10.30%, which is one of the highest PCEs to date. A series of experiments are used to shed light upon the mechanism of the simultaneous elevation in photovoltaic parame...
Article
We develop an efficient fused-ring electron acceptor (ITIC-Th) based on indacenodithieno[3,2-b]thiophene core and thienyl side-chains for organic solar cells (OSCs). Relative to its counterpart with phenyl side-chains (ITIC), ITIC-Th shows lower energy levels (ITIC-Th: HOMO = -5.66 eV, LUMO = -3.93 eV; ITIC: HOMO = -5.48 eV, LUMO = -3.83 eV) due to...
Article
A planar fused-ring electron acceptor (IC-C6IDT-IC) based on indacenodithiophene is designed and synthesized. IC-C6IDT-IC shows strong absorption in 500-800 nm with extinction coefficient of up to 2.4 × 105 M-1 cm-1 and high electron mobility of 1.1 × 10-3 cm2 V-1 s-1. The as-cast polymer solar cells based on IC-C6IDT-IC without additional treatmen...
Article
Full-text available
Ethylenediamine (EDA) functionalized fullerene nanoparticles as independent electron transport layers (ETLs) for inverted polymer solar cells exhibited high electronic conductivity and low work function. Compared with ZnO, the power conversion efficiency of the devices based on PTB7-Th:PC71BM was increased from 9.1% to 10.06% with C60–EDA ETLs and...
Article
Full-text available
Six fractions of indene-C60 bisadducts (IC60BAs) with two indene pendants located at different positions of the C60 cage were isolated by using the HPLC technique, in which one enantiomeric mixture was purified and the structure was confirmed by single crystal XRD analysis. It was revealed that the isolated IC60BA isomers possess an elevated LUMO e...

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Projects

Projects (2)
Project
aim at the synthesis of non-fullerene acceptors and device fabrication.
Project
The project is aimed at improving polymer solar cells efficiency. The methods is trying to optimize active layer as well as interfacial modification.