A5037954277- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Perovskite Materials and Applications
- Advanced Sensor and Energy Harvesting Materials
- Advanced Polymer Synthesis and Characterization
- Block Copolymer Self-Assembly
- Thin-Film Transistor Technologies
- Quantum Dots Synthesis And Properties
- Dendrimers and Hyperbranched Polymers
- Radical Photochemical Reactions
- Innovative Microfluidic and Catalytic Techniques Innovation
- Modular Robots and Swarm Intelligence
- Pickering emulsions and particle stabilization
- Carbon and Quantum Dots Applications
- Organic Light-Emitting Diodes Research
- Photopolymerization techniques and applications
- Nanocluster Synthesis and Applications
- Transition Metal Oxide Nanomaterials
- Membrane Separation and Gas Transport
Korea Advanced Institute of Science and Technology
2021-2025
Ho Chi Minh City University of Science
2025
Vietnam National University Ho Chi Minh City
2018-2025
Government of the Republic of Korea
2021
Daejeon University
2021
Ho Chi Minh City University of Technology
2019
University of Technology
2018
Laboratoire de Chimie
2007-2008
We develop an effective strategy to obtain polymer solar cells with high power conversion efficiency (17%) and remarkable mechanical robustness, by design of donors aliphatic flexible spacer incorporated into a rigid backbone.
High power conversion efficiency (PCE) and long-term stability are important requirements for commercialization of organic solar cells (OSCs). In this study, we demonstrate efficient (PCE = 18.60%) stable (t80% lifetime > 4000 h) OSCs by developing a series dimerized small-molecule acceptors (DSMAs). We prepared three different DSMAs (DYT, DYV, DYTVT) using linkers (i.e., thiophene, vinylene, thiophene– vinylene– thiophene), to connect their two Y-based building blocks. find that the...
Intrinsically stretchable organic solar cells (IS-OSCs), consisting of all layers, are attracting significant attention as a future power source for wearable electronics. However, most the efficient active layers OSCs mechanically brittle due to their rigid molecular structures designed high electrical and optical properties. Here, series new polymer donors (PD s, PhAmX) featuring phenyl amide (N1 ,N3 -bis((5-bromothiophen-2-yl)methyl)isophthalamide, PhAm)-based flexible spacer (FS) inducing...
We report a new trimer acceptor (TYT) composed of three Y-based molecules connected by electron-donating spacers. The TYT enables high-performance and stable organic solar cell (OSC) with t 80% lifetime >8000 h under 1 sun illumination.
High power conversion efficiency (PCE) and stretchability are the dual requirements for wearable application of polymer solar cells (PSCs). However, most efficient photoactive films mechanically brittle. In this work, highly (PCE = 18%) robust (crack-onset strain (COS) PSCs acheived by designing block copolymer (BCP) donors, PM6-b-PDMSx (x 5k, 12k, 19k). these BCP stretchable poly(dimethylsiloxane) (PDMS) blocks covalently linked with PM6 to effectively increase stretchability. The donors...
Abstract The commercialization of organic solar cells (OSCs) requires both high power conversion efficiency (PCE) and long‐term stability. However, the lifetime OSCs containing small‐molecule acceptors (SMA) should be significantly enhanced. In this study, a series planarity‐controlled is developed, electron mobility dimerized SMAs (DSMAs) realize with high‐performance (PCE = 18.8%) high‐stability ( t 80% 5380 h under 1‐Sun illumination). An acetylene linker planar triple bond designed for...
Abstract High power conversion efficiency (PCE), long‐term stability, and mechanical robustness are prerequisites for the commercial applications of organic solar cells (OSCs). In this study, a new star‐shaped trimer acceptor (TYT‐S) is developed high‐performance OSCs with PCE 19.0%, high photo‐stability ( t 80% lifetime = 2600 h under 1‐sun illumination), crack‐onset strain (COS) 21.6% achieved. The isotropic molecular structure TYT‐S affords efficient multi‐directional charge transport...
Abstract The charge transport ability of polymer acceptors ( P A s) is crucial for achieving high power conversion efficiencies (PCEs) all‐polymer solar cells (all‐PSCs). However, the electron mobilities (μ e most s are inferior to those their small molecule acceptor (SMA) counterparts. Herein, authors design a new series polymerized SMA‐based (Y5‐A‐B), where donating moiety (A = selenophene (Se)/biselenophene (BiSe)) and backbone regioregularity (B In/Mix/Out) 2D controlled, enhancing both...
All-polymer solar cells (all-PSCs) possess attractive merits including superior thermal stability and mechanical flexibility for large-area roll-to-roll processing. Introducing flexible conjugation-break spacers (FCBSs) into backbones of polymer donor (PD) or acceptor (PA) has been demonstrated as an efficient approach to enhance both the photovoltaic (PV) properties all-PSCs. However, length dependency FCBS on certain all-PSC related not systematically explored. In this regard, we report a...
Abstract Owing to their simple chemical structures and straightforward synthesis, poly(thiophene vinylene) (PTV) derivatives are promising types of polymer donors for organic solar cells (OSCs). However, the structural rigidity PTVs results in formation films with poor mechanical properties, which limits application intrinsically stretchable (IS)‐OSCs. Here, new carboxylate‐containing developed tuned molecular weight (MW) (PETTCVT‐X, X = L, M, H) realize efficient mechanically durable...
Abstract High power conversion efficiency (PCE) and long‐term stability are prerequisites for commercialization of organic solar cells (OSCs). Herein, two dimer acceptors (DYTVT DYTCVT) developed with different properties through linker engineering, study their effects as alloy‐like on the photovoltaic performance photostability OSCs. These ternary OSCs effectively combine advantages both acceptors. DYTVT, characterized by its high backbone planarity, ensures elevated electron mobility...
The recent evolution of new polymer acceptors (PAs) using small-molecule building blocks with high light absorption has significantly increased the power conversion efficiency (PCE) all-polymer solar cells (all-PSCs), but their mechanical properties are typically poor. Thus, poly[[N,N′-bis(2-octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyl]-alt-5,5′-(2,2′-bithiophene)] (N2200) is still considered one most successful PAs in all-PSCs. Herein, we report development naphthalene...
We develop a series of green solvent-processable small molecule acceptors (YSe–C3, YSe–C6, and YSe–C9) with different outer side-chains, affording high-performance organic solar cells (16.1%) green-solvent processing.
Numerous conjugated polymer-based electrochromic devices (ECDs) have been developed, but the correlation between electronic properties of polymers (ECPs) and their EC performance, especially response speeds, has rarely explored. In this work, we propose two new dithienopyran-based ECPs containing different heteroatoms with distinct characteristics to elucidate effect structure on performance. When electron-donating alkoxy groups are fused into (P(DT-P)), highest occupied molecular orbital...
Abstract The dimerization of small molecule acceptors (SMAs) is a promising strategy for enhancing the long‐term stability and power conversion efficiency (PCE) organic solar cells (OSCs). However, reported DSMAs are primarily limited to end‐linked molecular configurations, highlighting need further exploration various dimer architectures. Herein, development two distinct core‐linked dimerized SMAs (DYF‐V DYF‐E) with tailored linker structures (vinylene ethynyl, respectively), achieving...
New polymer acceptors (PYSiO- X ( = 0–30%)) containing siloxane-based flexible spacers (SiO-FSs) are developed. The resulting halogen-free solvent processed all-polymer solar cells show high photovoltaic efficiency and mechanical robustness.
We synthesize a series of benzobisthiazole-incorporating polymer donors (PM6-DTzB X ) to achieve efficient, thermally-stable, mechanically-robust solar cells (PSCs) by non-halogenated solution processing.
The simultaneous achievement of high power conversion efficiency (PCE) and long-term stability is essential for the commercialization organic solar cells (OSCs). However, efficient OSCs based on small-molecule acceptors (SMAs) typically show poor stability, mainly because morphological deterioration caused by fast diffusion SMA molecules during thermal- photostresses. In this study, two dimerized SMAs (DSMAs) comprising selenophene spacers with different regiopositions, DYSe-I DYSe-O, are...
Abstract Discrete dimer or multimer acceptors have enhanced the stability of organic solar cells (OSCs) due to their slow diffusion kinetics resulting from large molecular sizes. However, development with chain length longer than trimers has been challenging, which often require multistep reactions low synthetic yield. In this study, a new discrete tetramer acceptor (TetA) using one‐pot reaction and subsequent purification processes is developed. During purification, (DA) trimer (TA) are...
Carbon quantum dots derived from green biomass sources have been an emerging topic in recent times. Various such as fruit peels, rice husks, corn cobs, sugarcane bagasse, etc employed synthesis of carbon dot. In this work, were synthesised Blumea lacera precursor using hydrothermal method. is quite popular many countries and available around the year. Crystal structure, morphology stability also studied with X-ray diffraction, Fourier transmission infrared spectroscopy, Raman electron...
Abstract Regulating blend morphology in photoactive films is essential for enhancing the power conversion efficiency (PCE) of organic solar cells (OSCs). However, achieving precise control over remains a significant challenge due to difficulty simultaneously controlling thermodynamic and kinetic parameters that govern formation. In this study, series new small‐molecule acceptors (SMAs) employing dual side chain functionalization strategy designed incorporates trifluoromethyl (CF 3 ) phenyl...
Co-assembly of block copolymers (BCPs) and organic/inorganic additives affords the design various hierarchical nanostructures. In this work, we investigate shape-changing capabilities poly(styrene-block-2-vinylpyridine) (PS-b-P2VP) BCP particles upon quaternization with a series bromoalkyl benzene different alkyl spacer lengths. The exhibit hydrolyzing quaternizing behaviors depending on their chemical structures. When benzyl bromide (BB) is used, PS-b-P2VP dramatic shape transitions from...