A5042612384- Perovskite Materials and Applications
- Magnetic and transport properties of perovskites and related materials
- ZnO doping and properties
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Conducting polymers and applications
- Gas Sensing Nanomaterials and Sensors
- Organic Electronics and Photovoltaics
- Multiferroics and related materials
- Electronic and Structural Properties of Oxides
- Ga2O3 and related materials
- Transition Metal Oxide Nanomaterials
- Advanced Condensed Matter Physics
- Copper-based nanomaterials and applications
- Iron oxide chemistry and applications
- Advanced Photocatalysis Techniques
- Magnetic properties of thin films
- Magnetic Properties of Alloys
- Crystallography and molecular interactions
- Magnetic Properties and Synthesis of Ferrites
- Chalcogenide Semiconductor Thin Films
- 2D Materials and Applications
- Thin-Film Transistor Technologies
- Rare-earth and actinide compounds
- Advanced Memory and Neural Computing
Pohang University of Science and Technology
2017-2024
Indian Institute of Technology Dhanbad
2024
Lovely Professional University
2023
Pohang Accelerator Laboratory
2017-2023
Central Scientific Instruments Organisation
2022
National Institute of Technology Jamshedpur
2020
Dongguk University
2020
Institute of Genomics and Integrative Biology
2020
Council of Scientific and Industrial Research
2020
Korea Post
2020
Abstract Morphology is a critical factor to determine the photovoltaic performance of organic solar cells (OSCs). However, delicately fine‐tuning morphology involving only small molecules an extremely challenging task. Herein, simple, generic, and effective concentration‐induced manipulation approach demonstrated prompt both state‐of‐the‐art thin‐film BTR‐Cl:Y6 thick‐film BTR:PC 71 BM all‐small‐molecule (ASM) OSCs record level. The controlled by subtly altering prepared solution...
Abstract Thick‐film all‐small‐molecule (ASM) organic solar cells (OSCs) are preferred for large‐scale fabrication with printing techniques due to the distinct advantages of monodispersion, easy purification, and negligible batch‐to‐batch variation. However, ASM OSCs typically constrained by morphology aspect achieve high efficiency maintain thick film simultaneously. Specifically, synchronously manipulating crystallinity, domain size, phase segregation a suitable level extremely challenging....
A thiazole-functionalized terpolymer donor enables 18.4% efficiency polymer solar cells.
With the continuous development of organic semiconductor materials and on-going improvement device technology, power conversion efficiencies (PCEs) solar cells (OSCs) have surpassed threshold 19%. Now, low production cost photovoltaic devices become an imperative demand for its practical application future commercialization. Herein, feasibility simplified synthesis cost-effective small-molecule acceptors via end-cap isomeric engineering is demonstrated, two constitutional isomers, BTP-m-4Cl...
Herein, we report a detailed study on the optoelectronic properties, photovoltaic performance, structural conformation, morphology variation, charge carrier mobility, and recombination dynamics in bulk heterojunction solar cells comprising series of donor-acceptor conjugated polymers as electron donors based benzodithiophene (BDT) 5,8-bis(5-bromothiophen-2-yl)-6,7-difluoro-2,3-bis(3-(octyloxy)phenyl)quinoxaline function BDT's thienyl substitution (alkyl (WF3), alkylthio (WF3S), fluoro...
Solution‐processed ternary organic solar cells (OSCs) contain a third component in the active layer addition to donor/acceptor materials. Two main avenues are considered fabricate OSCs: 1) improve short‐circuit current density by selected that broadens and/or enhances absorption of host films and 2) increase fill factor adding materials with diverse crystallinity tune film morphology. However, little work is reported for improvement open‐circuit voltage ( V OC ), energetic disorder, charge...
Activation of hematite by low-temperature hydrogen reduction induced highly Sn<sup>4+</sup> diffusion.
Two new small molecule donors (BDT-RO and BDT-RN) with esterified rhodanine (RE) as the terminal group are designed synthesized. By combining fused-ring acceptor IDIC, a high PCE of over 9.0% is achieved by BDT-RO, its isomer BDT-RN also shows close to 8.4%.
The design and synthesis of a stable efficient hole-transport material (HTM) for perovskite solar cells (PSCs) are one the most demanding research areas. At present, 2,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-spirobifluorene (spiro-MeOTAD) is commonly used HTM in fabrication high-efficiency PSCs; however, its complicated synthesis, addition dopant order to realize best efficiency, high cost major challenges further development PSCs. Herein, various diketopyrrolopyrrole-based small...
Organic ammonium salts are widely used for surface passivation to enhance the photovoltaic (PV) performance and stability of perovskite solar cells (PSCs). However, protic nature units results in quick degradation perovskites due hydrogen bonding interaction with water molecules. Recently, organo-sulfur compounds have attracted growing interest as layers on three-dimensional their moisture-resistive behavior. Herein, trimethylsulfonium iodide (TMSI), an aprotic S-based organic compound, is...
Random ternary copolymerization is a simple but effective strategy to develop new efficient polymer donors for solar cell application. Herein, series of copolymers, OPz1, OPz2, OPz3, and OPz4, containing varying fraction ester-substituted thiazole (E-Tz) as the third component widely studied PM6 copolymer, were synthesized. Incorporation E-Tz unit found significantly improve molecular planarity, energy levels, light-harvesting range donors. Impressively, subtle regulation content realized...
Mixed halogen substitution on the end groups of organic photovoltaic materials has been proven to be an effective way generate with enhanced performance. A systematic comparison mixed atom types can provide comprehensive information this strategy; however, is usually limited by lack a facile synthesis route. Herein, new class featuring halogenation, easily obtained via two steps excellent yields, reported. The are applied in synthesizing acceptor materials, and their performance compared...