Alkyl Side-Chain Engineering in Wide-Bandgap Copolymers Leading to Power Conversion Efficiencies over 10.
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DOI: 10.1002/adma.201604251
Abstract: A series of wide-bandgap (WBG) copolymers with different alkyl side chains are synthesized. Among them, copolymer PBT1-EH with moderatly bulky side chains on the acceptor unit shows the best photovoltaic performance with power conversion efficiency… read more here.
Keywords: alkyl side; chain engineering; wide bandgap; power conversion ... See more keywords
Efficient Nonfullerene Polymer Solar Cells Enabled by a Novel Wide Bandgap Small Molecular Acceptor.
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DOI: 10.1002/adma.201606054
Abstract: A wide bandgap small molecular acceptor, SFBRCN, containing a 3D spirobifluorene core flaked with a 2,1,3-benzothiadiazole (BT) and end-capped with highly electron-deficient (3-ethylhexyl-4-oxothiazolidine-2-yl)dimalononitrile (RCN) units, has been successfully synthesized as a small molecular acceptor (SMA)… read more here.
Keywords: bandgap; wide bandgap; polymer; small molecular ... See more keywords
Matching Charge Extraction Contact for Wide-Bandgap Perovskite Solar Cells.
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DOI: 10.1002/adma.201700607
Abstract: 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… read more here.
Keywords: wide bandgap; perovskite solar; wbg perovskite; matching charge ... See more keywords
Realizing Over 13% Efficiency in Green-Solvent-Processed Nonfullerene Organic Solar Cells Enabled by 1,3,4-Thiadiazole-Based Wide-Bandgap Copolymers.
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DOI: 10.1002/adma.201703973
Abstract: Two novel wide-bandgap copolymers, PBDT-TDZ and PBDTS-TDZ, are developed based on 1,3,4-thiadiazole (TDZ) and benzo[1,2-b:4,5-b']dithiophene (BDT) building blocks. These copolymers exhibit wide bandgaps over 2.07 eV and low-lying highest occupied molecular orbital (HOMO) levels below… read more here.
Keywords: organic solar; bandgap; wide bandgap; tdz ... See more keywords
Noninvasively Modifying Band Structures of Wide-Bandgap Metal Oxides to Boost Photocatalytic Activity.
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DOI: 10.1002/adma.201706259
Abstract: Although doping with appropriate heteroatoms is a powerful way of increasing visible light absorption of wide-bandgap metal oxide photocatalysts, the incorporation of heteroatoms into the photocatalysts usually leads to the increase of deleterious recombination centers… read more here.
Keywords: bandgap metal; wide bandgap; visible light; metal ... See more keywords
Amide-Catalyzed Phase-Selective Crystallization Reduces Defect Density in Wide-Bandgap Perovskites.
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DOI: 10.1002/adma.201706275
Abstract: Wide-bandgap (WBG) formamidinium-cesium (FA-Cs) lead iodide-bromide mixed perovskites are promising materials for front cells well-matched with crystalline silicon to form tandem solar cells. They offer avenues to augment the performance of widely deployed commercial solar… read more here.
Keywords: bandgap; phase; wide bandgap; crystallization ... See more keywords
Steric Engineering Enables Efficient and Photostable wide-bandgap Perovskites for all-perovskite Tandem Solar Cells.
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DOI: 10.1002/adma.202110356
Abstract: Wide-bandgap (∼1.8 eV) perovskite is an crucial component to pair with narrow-bandgap perovskite in low-cost monolithic all-perovskite tandem solar cells. However, the stability and efficiency of wide-bandgap perovskite solar cells are constrained by the light-induced halide… read more here.
Keywords: bandgap; solar cells; perovskite tandem; tandem solar ... See more keywords
CsPbCl3‐Cluster‐Widened Bandgap and Inhibited Phase Segregation in a Wide‐Bandgap Perovskite and its Application to NiOx‐Based Perovskite/Silicon Tandem Solar Cells
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DOI: 10.1002/adma.202201451
Abstract: Nickel oxide (NiOx) is an attractive hole‐transport material for efficient and stable p–i–n metal‐halide perovskite solar cells (PSCs). However, an undesirable redox reaction occurs at the NiOx/perovskite interface, which results in a low open‐circuit voltage… read more here.
Keywords: perovskite silicon; bandgap; solar cells; niox based ... See more keywords
A Wide Bandgap Halide Perovskite Based Self‐Powered Blue Photodetector with 84.9% of External Quantum Efficiency
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DOI: 10.1002/adma.202206932
Abstract: A self‐powered, color‐filter‐free blue photodetector (PD) based on halide perovskites is reported. A high external quantum efficiency (EQE) of 84.9%, which is the highest reported EQE in blue PDs, is achieved by engineering the A‐site… read more here.
Keywords: blue photodetector; quantum efficiency; wide bandgap; external quantum ... See more keywords
Chloride-Based Additive Engineering For Efficient and Stable Wide-Bandgap Perovskite Solar Cells.
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DOI: 10.1002/adma.202211742
Abstract: Metal halide perovskite-based tandem solar cells are promising to achieve power conversion efficiency beyond the theoretical limit of their single-junction counterparts. However, overcoming the significant open-circuit voltage deficit present in wide-bandgap perovskite solar cells remains… read more here.
Keywords: efficient stable; solar cells; wide bandgap; bandgap perovskite ... See more keywords
Benzo[d]thiazole Based Wide Bandgap Donor Polymers Enable 19.54% Efficiency Organic Solar Cells Along with Desirable Batch‐to‐Batch Reproducibility and General Applicability
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DOI: 10.1002/adma.202300631
Abstract: The limited selection pool of high‐performance wide bandgap (WBG) polymer donors is a bottleneck problem of the nonfullerene acceptor (NFA) based organic solar cells (OSCs) that impedes the further improvement of their photovoltaic performances. Herein,… read more here.
Keywords: organic solar; batch batch; solar cells; wide bandgap ... See more keywords