A5100696187- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Perovskite Materials and Applications
- Organic Light-Emitting Diodes Research
- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Thin-Film Transistor Technologies
- Chalcogenide Semiconductor Thin Films
- Semiconductor Lasers and Optical Devices
- 2D Materials and Applications
- Wireless Communication Networks Research
- Green IT and Sustainability
- Microwave Dielectric Ceramics Synthesis
- Semiconductor materials and interfaces
- Image and Video Quality Assessment
- Advanced Wireless Network Optimization
- Quantum Dots Synthesis And Properties
- IPv6, Mobility, Handover, Networks, Security
- Wireless Networks and Protocols
- Cooperative Communication and Network Coding
- Telecommunications and Broadcasting Technologies
- Electric Power System Optimization
- Nanoplatforms for cancer theranostics
- Energy Load and Power Forecasting
- Advanced Nanomaterials in Catalysis
Ningxia Medical University
2024
Chinese Academy of Sciences
2012-2023
Beijing Jiaotong University
2022-2023
Shenzhen Institutes of Advanced Technology
2022-2023
Heilongjiang University
2019-2021
Chalmers University of Technology
2014-2018
Göteborgs Stads
2016-2017
State Key Laboratory of Polymer Physics and Chemistry
2012-2013
Beijing National Laboratory for Molecular Sciences
2012-2013
Institute of Chemistry
2012-2013
Growing interests have been devoted to the design of polymer acceptors as potential replacement for fullerene derivatives high-performance all solar cells (all-PSCs). One key factor that is limiting efficiency all-PSCs low fill (FF) (normally <0.65), which strongly correlated with mobility and film morphology polymer:polymer blends. In this work, we find a facile method modulate crystallinity well-known naphthalene diimide (NDI) based N2200, by replacing certain amount bithiophene (2T) units...
High-performance ternary all-polymer solar cells with outstanding efficiency of 9.0% are realized by incorporating two donor and one acceptor polymers complementary absorption proper energy level alignment.
The correlation among molecular conformation, the crystallinity of morphology, propensity for π–π stacking, J- versus H-aggregation, and photovoltaic performance have been studied based on two newly designed polymers, PBDTTT-S-T PDT-S-T. results show that more linear backbone structure is helpful to improve properties polymer, therefore, conformation should be considered design polymers. As a service our authors readers, this journal provides supporting information supplied by authors. Such...
In order to investigate the influence of two-dimensional (2D) conjugated structure on photovoltaic properties benzo[1,2-b:4,5-b′]difuran (BDF)-based polymers, two low band gap named PBDFTT-CF-O and PBDFTT-CF-T, were designed synthesized. These polymers have same backbones different side groups. Although these show similar optical gaps (ca. 1.5 eV), polymer with alkylthienyl groups, exhibits stronger absorption in long wavelength direction than alkoxyl PBDFTT-CF-O. Meanwhile, PBDFTT-CF-T a...
To extend the π conjugation along backbone units is an effective way to tune optoelectronic properties of conjugated polymers. In this work, investigate influence extended on photovoltaic polymer, we employed a two-step molecular optimization process, and series diketopyrrolopyrrole (DPP)-based polymers, PBDPP-1, PBDPP-2, PBDPP-3, was prepared applied in polymer solar cells. After structure, compatibility between PC71BM becomes much better; as result, bicontinuous phase separation with...
To explore the advantages of emerging all‐polymer solar cells (all‐PSCs), growing efforts have been devoted to developing matched donor and acceptor polymers outperform fullerene‐based PSCs. In this work, a detailed characterization comparison all‐PSCs using set with both conventional inverted device structures is performed. A simple method quantify actual composition light harvesting contributions from individual described. Detailed study on exciton dissociation charge recombination carried...
We investigate conductivity and mobility of different hosts mixed with electron-withdrawing guests in concentrations ranging from ultralow to high. The effect the guest material on host varies systematically guests' LUMO energy relative HOMO, quantitative agreement a recently developed model. For within ∼0.5 eV HOMO dominant process governing transport is competition between formation deep tail DOS state filling. In other cases, interaction dominated by any polar side groups changes...
Abstract In very recent years, growing efforts have been devoted to the development of all‐polymer solar cells (all‐PSCs). One advantages all‐PSCs over fullerene‐based PSCs is versatile design both donor and acceptor polymers which allows optimization energy levels maximize open‐circuit voltage ( V oc ). However, there no successful example with high 1 power conversion efficiency (PCE) up 8% reported so far. this work, a combination polymer...
A novel polythiophene derivative, PBT1, was designed, synthesized, and applied in polymer solar cells (PSCs). This work provides a successful example of using molecular structure as tool to realize optimal photovoltaic performance with high content, thus enabling the realization efficient photoabsorption very thin films. As result, an efficiency 6.88% recorded PSC 75 nm active layer.
High-photovoltage all-PSCs with good stability were realized by using a new polymer acceptor based on diketopyrrolopyrrole–isoindigo.
We experimentally demonstrated a high sensitive gas pressure sensor, which also has more concise processing steps and lower cost. The sensor was fabricated by splicing the single-mode fiber (SMF) short section of hollow-core (HCF) filled with Polydimethylsiloxane (PDMS) film to form an enclosed air microcavity length 55 μm. thin PDMS plays role in reflecting beam. thermo-optical effect thickness can affect cavity that is external pressure. When membrane 3 μm, measured sensitivity reaches...
A feasible synthetic route to alkoxy-substituted DTBDT was designed and the first DTBDT-based polymer prepared applied in organic solar cells. The preliminary results indicate that unit can be used as a potential building block semiconductor materials.
Two conjugated polymers, PBDT–TBT and PBDT–TTBT, were designed synthesized. has a zigzagged chain conformation (Z-type), while PBDT–TTBT linear (L-type). The results show that the polymer significantly affects optoelectronic properties of polymers. With change from Z-type to L-type, J-aggregation was enhanced greatly, i.e. shows much more prominent absorption shoulder peak at long wavelength direction compared PBDT–TBT. In X-ray diffraction analysis, it found L-type stronger crystallinity...
A novel small molecule with a acceptor–donor–acceptor (A–D–A) structure, IDT(BTTh2)2, containing an electron-rich indacenodithiophene (IDT) unit as core, flanked by electron-deficient 2,1,3-benzothiadiazole (BT) units and end-capped hexyl-substituted bithiophene units, has been synthesized for photovoltaic application. IDT(BTTh2)2 shows broad absorption in the visible range optical band gap of ca. 1.80 eV possesses relatively deep HOMO level at −5.21 eV. The solution-processed bulk...
Polymers based on quinoxaline and indacenodithieno[3,2-<italic>b</italic>]thiophene (IDTT) with<italic>meta</italic>-hexyl-phenyl side chains were synthesized.
A series of low band gap photovoltaic copolymers containing benzodifuran-alt-thieno[3,4-b]thiophene (BDF-alt-TT) were designed and synthesized. Functional groups with different electron-withdrawing abilities such as carbonyl, ester, fluorine, sulfuryl cyano introduced to the thieno[3,4-b]thiophene unit finely tune molecular energy levels these copolymers. All are characterized by UV-Vis spectroscopy electrochemical cyclic voltammetry (CV) evaluate effects electron-deficient functional...
Thermally activated delayed fluorescence (TADF) materials enable organic light-emitting devices (OLEDs) to exhibit high external quantum efficiency (EQE), as they can fully utilize singlets and triplets. Despite the theoretical limit in EQE of TADF OLEDs, reported values literature vary a lot. Hence, it is critical quantify effects factors on device based data-driven approaches. Herein, we use machine learning (ML) algorithms map relationship between material/device structural EQE. We...
In this paper, a novel in-line modal interferometer for refractive index (RI) sensing is proposed and experimentally fabricated by cascading single-taper multimode-double- cladding-multimode (MDM) fiber structure. Owing to evanescent field in taper area, the ultra-sensitive linear intensity-responses varied surrounding RI are gained both single- double-pass structures. Moreover, crosstalk from temperature can be effectively discriminated compensated means of RI-free nature MDM. The...
All‐polymer solar cells (APSCs), composed of semiconducting donor and acceptor polymers, have attracted considerable attention due to their unique advantages compared polymer‐fullerene‐based devices in terms enhanced light absorption morphological stability. To improve the performance APSCs, morphology active layer must be optimized. By employing a random copolymerization strategy control regularity backbone polymers (PTAZ‐TPD x ) (PNDI‐T can systematically optimized by tuning polymer...
In this paper, a novel in-fiber modal interferometer for liquid level sensing is proposed and experimentally demonstrated based on the cascaded quasi-microfiber double-cladding fiber (QM-DCF) structure. The QM utilized to monitor change of with intensity modulation part DCF always immersed into serves sense variation ambient temperature. Then comprehensive tests are performed experimental results show that, due massive loss evanescent field in area taper waist, competitive liquid-level...