2D/3D Heterostructure for Semitransparent Perovskite Solar Cells with Engineered Bandgap Enables Efficiencies Exceeding 25% in Four‐Terminal Tandems with Silicon and CIGS
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DOI: 10.1002/adfm.201909919
Abstract: Wide-bandgap perovskite solar cells (PSCs) with optimal bandgap (E$_{g}$) and high power conversion efficiency (PCE) are key to high-performance perovskite-based tandem photovoltaics. A 2D/3D perovskite heterostructure passivation is employed for double-cation wide-bandgap PSCs with engineered… read more here.
Keywords: bandgap; perovskite solar; four terminal; engineered bandgap ... 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
A Game Changer: A Multifunctional Perovskite Exhibiting Giant Ferroelectricity and Narrow Bandgap with Potential Application in a Truly Monolithic Multienergy Harvester or Sensor.
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DOI: 10.1002/adma.201700767
Abstract: An ABO3 -type perovskite solid-solution, (K0.5 Na0.5 )NbO3 (KNN) doped with 2 mol% Ba(Ni0.5 Nb0.5 )O3-δ (BNNO) is reported. Such a composition yields a much narrower bandgap (≈1.6 eV) compared to the parental composition-pure KNN-and… read more here.
Keywords: bandgap; game changer; energy; narrow bandgap ... 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
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
Enabling High-Performance Tandem Organic Photovoltaic Cells by Balancing the Front and Rear Subcells.
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DOI: 10.1002/adma.202002315
Abstract: In tandem organic photovoltaics, the front subcell is based on large-bandgap materials, whereas the case of the rear subcell is more complicated. The rear subcell is generally composed of a narrow-bandgap acceptor for infrared absorption… read more here.
Keywords: subcell; bandgap; rear subcell; tandem organic ... See more keywords
Regioregular Narrow-Bandgap n-Type Polymers with High Electron Mobility Enabling Highly Efficient All-Polymer Solar Cells.
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DOI: 10.1002/adma.202102635
Abstract: Narrow-bandgap n-type polymers with high electron mobility are urgently demanded for the development of all-polymer solar cells (all-PSCs). Here, two regioregular narrow-bandgap polymer acceptors, L15 and MBTI, with two electron-deficient segments are synthesized by copolymerizing… read more here.
Keywords: bandgap; polymer; high electron; narrow bandgap ... See more keywords
A Selective Targeting Anchor Strategy Affords Efficient and Stable Ideal‐Bandgap Perovskite Solar Cells
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DOI: 10.1002/adma.202110241
Abstract: Mixed lead–tin perovskite solar cells (LTPSCs) with an ideal bandgap are demonstrated as a promising candidate to reach higher power conversion efficiency (PCE) than their Pb‐counterparts. Herein, a Br‐free mixed lead–tin perovskite material, FA0.8MA0.2Pb0.8Sn0.2I3, with… read more here.
Keywords: ideal bandgap; bandgap; solar cells; selective targeting ... 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
Improved Carrier Management via a Multifunctional Modifier for High‐Quality Low‐Bandgap Sn–Pb Perovskites and Efficient All‐Perovskite Tandem Solar Cells
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DOI: 10.1002/adma.202300352
Abstract: All‐perovskite tandem solar cells (TSCs) hold great promise in terms of ultrahigh efficiency, low manufacturing cost, and flexibility, stepping forward to the next‐generation photovoltaics. However, their further development is hampered by the relatively low performance… read more here.
Keywords: carrier; bandgap; solar cells; tandem ... See more keywords