Search Results - "Chow, Philip C. Y."
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The role of spin in the kinetic control of recombination in organic photovoltaics
Published in Nature (London) (22-08-2013)“…The interplay of spin, energetics and delocalization of the electronic excitations are shown to create a spin blockade of electron–hole recombination in…”
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2
Delocalization of exciton and electron wavefunction in non-fullerene acceptor molecules enables efficient organic solar cells
Published in Nature communications (07-08-2020)“…A major challenge for organic solar cell (OSC) research is how to minimize the tradeoff between voltage loss and charge generation. In early 2019, we reported…”
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3
Long-lived and disorder-free charge transfer states enable endothermic charge separation in efficient non-fullerene organic solar cells
Published in Nature communications (05-11-2020)“…Organic solar cells based on non-fullerene acceptors can show high charge generation yields despite near-zero donor–acceptor energy offsets to drive charge…”
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4
Quantitative Bimolecular Recombination in Organic Photovoltaics through Triplet Exciton Formation
Published in Journal of the American Chemical Society (05-03-2014)“…The nanoscale morphology and high charge densities in organic photovoltaics (OPVs) lead to a high rate of bimolecular encounters between spin-uncorrelated…”
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5
The role of interfacial donor–acceptor percolation in efficient and stable all-polymer solar cells
Published in Nature communications (08-02-2024)“…Polymerization of Y6-type acceptor molecules leads to bulk-heterojunction organic solar cells with both high power-conversion efficiency and device stability,…”
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Assessing intra- and inter-molecular charge transfer excitations in non-fullerene acceptors using electroabsorption spectroscopy
Published in Nature communications (16-03-2024)“…Organic photovoltaic cells using Y6 non-fullerene acceptors have recently achieved high efficiency, and it was suggested to be attributed to the…”
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Organic Photodetectors for Next‐Generation Wearable Electronics
Published in Advanced materials (Weinheim) (01-04-2020)“…Next‐generation wearable electronics will need to be mechanically flexible and stretchable such that they can be conformally attached onto the human body…”
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All-Inkjet-Printed, All-Air-Processed Solar Cells
Published in Advanced energy materials (01-10-2014)“…The prospective of using direct‐write printing techniques for the manufacture of organic photovoltaics (OPVs) has made these techniques highly attractive. OPVs…”
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Charge-Transfer State Dynamics Following Hole and Electron Transfer in Organic Photovoltaic Devices
Published in The journal of physical chemistry letters (03-01-2013)“…The formation of bound electron–hole pairs, also called charge-transfer (CT) states, in organic-based photovoltaic devices is one of the dominant loss…”
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10
Nonfullerene Acceptor Molecules for Bulk Heterojunction Organic Solar Cells
Published in Chemical reviews (11-04-2018)“…The bulk-heterojunction blend of an electron donor and an electron acceptor material is the key component in a solution-processed organic photovoltaic device…”
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11
Design of Donor Polymers with Strong Temperature-Dependent Aggregation Property for Efficient Organic Photovoltaics
Published in Accounts of chemical research (17-10-2017)“…Conspectus Bulk heterojunction (BHJ) organic solar cells (OSCs) have attracted intensive research attention over the past two decades owing to their unique…”
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Nanosecond Intersystem Crossing Times in Fullerene Acceptors: Implications for Organic Photovoltaic Diodes
Published in Advanced materials (Weinheim) (23-07-2014)“…Triplet‐exciton formation through intersystem crossing of photogenerated singlet excitons in fullerene acceptors can compete with charge generation in organic…”
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13
A Wide-Bandgap Donor Polymer for Highly Efficient Non-fullerene Organic Solar Cells with a Small Voltage Loss
Published in Journal of the American Chemical Society (10-05-2017)“…To achieve efficient non-fullerene organic solar cells, it is important to reduce the voltage loss from the optical bandgap to the open-circuit voltage of the…”
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14
Ring-Fusion of Perylene Diimide Acceptor Enabling Efficient Nonfullerene Organic Solar Cells with a Small Voltage Loss
Published in Journal of the American Chemical Society (15-11-2017)“…We report a novel small molecule acceptor (SMA) named FTTB-PDI4 obtained via ring-fusion between the thiophene and perylene diimide (PDI) units of a…”
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Renewed Prospects for Organic Photovoltaics
Published in Chemical reviews (28-09-2022)“…Organic photovoltaics (OPVs) have progressed steadily through three stages of photoactive materials development: (i) use of poly(3-hexylthiophene) and…”
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Dual-gate organic phototransistor with high-gain and linear photoresponse
Published in Nature communications (31-10-2018)“…The conversion of light into electrical signal in a photodetector is a crucial process for a wide range of technological applications. Here we report a new…”
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Asymmetric Alkoxy and Alkyl Substitution on Nonfullerene Acceptors Enabling High‐Performance Organic Solar Cells
Published in Advanced energy materials (01-01-2021)“…In this paper, a strategy of asymmetric alkyl and alkoxy substitution is applied to state‐of‐the‐art Y‐series nonfullerene acceptors (NFAs), and it achieves…”
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Quasi‐2D Bilayer Surface Passivation for High Efficiency Narrow Bandgap Perovskite Solar Cells
Published in Angewandte Chemie International Edition (09-05-2022)“…The combination of comprehensive surface passivation and effective interface carriers transfer plays a critical role in high‐performance perovskite solar…”
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Influence of Donor Polymer on the Molecular Ordering of Small Molecular Acceptors in Nonfullerene Polymer Solar Cells
Published in Advanced energy materials (15-02-2018)“…Nonfullerene polymer solar cells (PSCs) based on polymer donors and nonfullerene small molecular acceptors (SMAs) have recently attracted considerable…”
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Quantification of Temperature‐Dependent Charge Separation and Recombination Dynamics in Non‐Fullerene Organic Photovoltaics
Published in Advanced functional materials (01-11-2021)“…Transient optical spectroscopy is used to quantify the temperature‐dependence of charge separation and recombination dynamics in P3TEA:SF‐PDI2 and PM6:Y6, two…”
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