Publications
486 results found
Nugraha MI, Indriyati I, Primadona I, et al., 2023, Recent Progress in Colloidal Quantum Dot Thermoelectrics., Adv Mater
Semiconducting colloidal quantum dots (CQDs) represent an emerging class of thermoelectric materials for use in a wide range of future applications. CQDs combine solution processability at low temperatures with the potential for upscalable manufacturing via printing techniques. Moreover, due to their low dimensionality, CQDs exhibit quantum confinement and a high density of grain boundaries, which can be independently exploited to tune the Seebeck coefficient and thermal conductivity, respectively. This unique combination of attractive attributes makes CQDs very promising for application in emerging thermoelectric generator (TEG) technologies operating near room temperature. Herein, we review recent progress in CQDs for application in emerging thin-film thermoelectrics. We start by outlining the fundamental concepts of thermoelectricity in nanostructured materials, followed by an overview of the popular synthetic methods used to produce CQDs with controllable size and shape. Recent strides in CQD-based thermoelectrics are then discussed with particular emphasis on their application in thin-film TEGs. Finally, we highlight the current challenges and future perspectives in enhancing the performance of CQD-based thermoelectric materials for use in emerging applications. This article is protected by copyright. All rights reserved.
Rahmawati I, Indriyati, Permatasari FA, et al., 2023, Modulating Photothermal Properties of Carbon Dots through Nitrogen Incorporation Enables Efficient Solar Water Evaporation, ACS APPLIED NANO MATERIALS
Lin Y, Zhang Y, Magomedov A, et al., 2023, 18.73% efficient and stable inverted organic photovoltaics featuring a hybrid hole-extraction layer, MATERIALS HORIZONS, ISSN: 2051-6347
Prajesh N, Naphade DR, Yadav A, et al., 2023, Visualization of domain structure and piezoelectric energy harvesting in a ferroelectric metal-ligand cage, CHEMICAL COMMUNICATIONS, Vol: 59, Pages: 2919-2922, ISSN: 1359-7345
He Q, Basu A, Cha H, et al., 2023, Ultra-Narrowband Near-Infrared Responsive J-Aggregates of Fused Quinoidal Tetracyanoindacenodithiophene, ADVANCED MATERIALS, ISSN: 0935-9648
Mandal S, Hou Y, Wang M, et al., 2023, Surface Modification of Hetero-phase Nanoparticles for Low-Cost Solution-Processable High-k Dielectric Polymer Nanocomposites, ACS APPLIED MATERIALS & INTERFACES, ISSN: 1944-8244
Portilla L, Loganathan K, Faber H, et al., 2023, Wirelessly powered large-area electronics for the Internet of Things (vol 6, pg.no: 10, 2023), NATURE ELECTRONICS, ISSN: 2520-1131
Yarali E, El-Demellawi JK, Faber H, et al., 2023, Fully Sprayed Metal Oxide Transistors Utilizing Ti3C2TX MXene Contacts, ACS APPLIED ELECTRONIC MATERIALS
Anies F, Nugraha MI, Fall A, et al., 2023, In Situ Generation of n-Type Dopants by Thermal Decarboxylation, ADVANCED FUNCTIONAL MATERIALS, ISSN: 1616-301X
Chen H, Jeong SY, Tian J, et al., 2023, A 19% efficient and stable organic photovoltaic device enabled by a guest nonfullerene acceptor with fibril-like morphology, ENERGY & ENVIRONMENTAL SCIENCE, ISSN: 1754-5692
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- Citations: 1
Hu X, Basu A, Rimmele M, et al., 2022, N-type polymer semiconductors incorporating heteroannulated benzothiadiazole, POLYMER CHEMISTRY, Vol: 14, Pages: 469-476, ISSN: 1759-9954
Portilla L, Loganathan K, Faber H, et al., 2022, Wirelessly powered large-area electronics for the Internet of Things, NATURE ELECTRONICS, Vol: 6, Pages: 10-17, ISSN: 2520-1131
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- Citations: 1
Griggs S, Marks A, Meli D, et al., 2022, The effect of residual palladium on the performance of organic electrochemical transistors., Nat Commun, Vol: 13
Organic electrochemical transistors are a promising technology for bioelectronic devices, with applications in neuromorphic computing and healthcare. The active component enabling an organic electrochemical transistor is the organic mixed ionic-electronic conductor whose optimization is critical for realizing high-performing devices. In this study, the influence of purity and molecular weight is examined for a p-type polythiophene and an n-type naphthalene diimide-based polymer in improving the performance and safety of organic electrochemical transistors. Our preparative GPC purification reduced the Pd content in the polymers and improved their organic electrochemical transistor mobility by ~60% and 80% for the p- and n-type materials, respectively. These findings demonstrate the paramount importance of removing residual Pd, which was concluded to be more critical than optimization of a polymer's molecular weight, to improve organic electrochemical transistor performance and that there is readily available improvement in performance and stability of many of the reported organic mixed ionic-electronic conductors.
AlGhamdi WS, Fakieh A, Faber H, et al., 2022, Impact of layer thickness on the operating characteristics of In2O3/ZnO heterojunction thin-film transistors, APPLIED PHYSICS LETTERS, Vol: 121, ISSN: 0003-6951
Vaseem M, Akhter Z, Li W, et al., 2022, High-conductivity screen-printable silver nanowire Ink for optically transparent flexible radio frequency electronics, FLEXIBLE AND PRINTED ELECTRONICS, Vol: 7, ISSN: 2058-8585
Isikgor FH, Maksudov T, Chang X, et al., 2022, Monolithic Perovskite-Perovskite-Organic Triple-Junction Solar Cells with a Voltage Output Exceeding 3 V, ACS ENERGY LETTERS, Vol: 7, Pages: 4469-4471, ISSN: 2380-8195
Lin Y, Zhang Y, Zhang J, et al., 2022, 18.9% Efficient Organic Solar Cells Based on n-Doped Bulk-Heterojunction and Halogen-Substituted Self-Assembled Monolayers as Hole Extracting Interlayers, ADVANCED ENERGY MATERIALS, Vol: 12, ISSN: 1614-6832
Gedda M, Gkeka D, Nugraha MI, et al., 2022, High-Efficiency Perovskite-Organic Blend Light-Emitting Diodes Featuring Self-Assembled Monolayers as Hole-Injecting Interlayers, ADVANCED ENERGY MATERIALS, ISSN: 1614-6832
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- Citations: 2
Liang J-W, Firdaus Y, Azmi R, et al., 2022, Cl-2-Doped CuSCN Hole Transport Layer for Organic and Perovskite Solar Cells with Improved Stability, ACS ENERGY LETTERS, Vol: 7, Pages: 3139-3148, ISSN: 2380-8195
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- Citations: 1
Wahyudi W, Guo X, Ladelta V, et al., 2022, Hitherto Unknown Solvent and Anion Pairs in Solvation Structures Reveal New Insights into High-Performance Lithium-Ion Batteries, ADVANCED SCIENCE, Vol: 9
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- Citations: 3
Rotas G, Antoniou G, Papagiorgis P, et al., 2022, Doping-induced decomposition of organic semiconductors: a caveat to the use of Lewis acid p-dopants, JOURNAL OF MATERIALS CHEMISTRY C, Vol: 10, Pages: 12751-12764, ISSN: 2050-7526
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- Citations: 1
Bertrandie J, Han J, De Castro CSP, et al., 2022, The Energy Level Conundrum of Organic Semiconductors in Solar Cells, ADVANCED MATERIALS, Vol: 34, ISSN: 0935-9648
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- Citations: 7
Li J, Song J, Luo L, et al., 2022, Synergy of MXene with Se Infiltrated Porous N-Doped Carbon Nanofibers as Janus Electrodes for High-Performance Sodium/Lithium-Selenium Batteries, ADVANCED ENERGY MATERIALS, Vol: 12, ISSN: 1614-6832
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- Citations: 3
Nugraha MI, Gedda M, Firdaus Y, et al., 2022, Addition of diquat enhances the electron mobility in various non-fullerene acceptor molecules, Advanced Functional Materials, ISSN: 1616-301X
Molecular doping of organic semiconductors is often used to enhance their charge transport characteristics. Despite its success, however, most studies to date concern p-doping with considerably fewer reports involving n-dopants. Here, n-doping of organic thin-film transistors (OTFTs) based on several non-fullerene acceptor (NFA) molecules using the recently developed diquat (DQ) as a soluble molecular dopant is reported. The low ionization potential of DQ facilitates efficient electron transfer and subsequent n-doping of the NFAs, resulting in a consistent increase in the electron field-effect mobility. Solution-processed BTP-eC9 and N3-based OTFTs exhibit significant increase in the electron mobility upon DQ doping, with values increasing from 0.02 to 0.17 cm2 V–1 s–1 and from 0.2 to 0.57 cm2 V–1 s–1, respectively. A remarkable electron mobility of >1 cm2 V–1 s–1 is achieved for O-IDTBR transistors upon optimal doping with DQ. The enhanced performance originates primarily from synergistic effects on electronic transport and changes in morphology, including: i) significant reduction of contact resistances, ii) formation of larger crystalline domains, iii) change of preferred crystal orientation, and iv) alteration in molecular packing motif. This work demonstrates the universality of DQ as an electronic additive for improving electron transport in OTFTs.
Khan JI, Gedda M, Wang M, et al., 2022, Photophysics of Defect-Passivated Quasi-2D (PEA)(2)PbBr4 Perovskite Using an Organic Small Molecule, ACS ENERGY LETTERS, Vol: 7, Pages: 2450-2458, ISSN: 2380-8195
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- Citations: 2
Xue F, Ma Y, Wang H, et al., 2022, Perspective Two-dimensional ferroelectricity and antiferroelectricity for next-generation computing paradigms, MATTER, Vol: 5, Pages: 1999-2014, ISSN: 2590-2393
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- Citations: 1
Loganathan K, Faber H, Yengel E, et al., 2022, Rapid and up-scalable manufacturing of gigahertz nanogap diodes, NATURE COMMUNICATIONS, Vol: 13
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- Citations: 1
Eisner F, Foot G, Yan J, et al., 2022, Emissive charge-transfer states at hybrid inorganic/organic heterojunctions enable low non-radiative recombination and high-performance photodetectors, Advanced Materials, Vol: 34, ISSN: 0935-9648
Hybrid devices based on a heterojunction between inorganic and organic semiconductors have offered a means to combine the advantages of both classes of materials in optoelectronic devices, but, in practice, the performance of such devices has often been disappointing. Here, it is demonstrated that charge generation in hybrid inorganic–organic heterojunctions consisting of copper thiocyanate (CuSCN) and a variety of molecular acceptors (ITIC, IT-4F, Y6, PC70BM, C70, C60) proceeds via emissive charge-transfer (CT) states analogous to those found at all-organic heterojunctions. Importantly, contrary to what has been observed at previous organic–inorganic heterojunctions, the dissociation of the CT-exciton and subsequent charge separation is efficient, allowing the fabrication of planar photovoltaic devices with very low non-radiative voltage losses (0.21 ± 0.02 V). It is shown that such low non-radiative recombination enables the fabrication of simple and cost-effective near-IR (NIR) detectors with extremely low dark current (4 pA cm−2) and noise spectral density (3 fA Hz−1/2) at no external bias, leading to specific detectivities at NIR wavelengths of just under 1013 Jones, close to the performance of commercial silicon photodetectors. It is believed that this work demonstrates the possibility for hybrid heterojunctions to exploit the unique properties of both inorganic and organic semiconductors for high-performance opto-electronic devices.
Firdaus Y, He Q, Muliani L, et al., 2022, Charge transport and recombination in wide-bandgap Y6 derivatives-based organic solar cells, ADVANCES IN NATURAL SCIENCES-NANOSCIENCE AND NANOTECHNOLOGY, Vol: 13, ISSN: 2043-6254
Wijeyasinghe N, Solomeshch O, Tessler N, et al., 2022, Radiofrequency Schottky Diodes Based on p-Doped Copper(I) Thiocyanate (CuSCN), ACS APPLIED MATERIALS & INTERFACES, ISSN: 1944-8244
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