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Spectra–Stability Relationships in Organic Electron Acceptors: Excited-State Analysis [PDF]

open access: yesMolecules
The operational stability of organic solar cells critically depends on the excited-state characteristics of electron acceptor materials. Through systematic quantum chemical calculations on four representative acceptors (PCBM, ITIC, Y6, and TBT-26), this ...
Yezi Yang   +4 more
doaj   +2 more sources

Predicting Excited-State Absorption Spectra from Non-Aufbau Configurations. [PDF]

open access: greenJ Chem Theory Comput
Knepp ZJ   +6 more
europepmc   +3 more sources

Electrochemiluminescence of Semiconductor Quantum Dots and Its Biosensing Applications: A Comprehensive Review

open access: yesBiosensors, 2023
Electrochemiluminescence (ECL) is the chemiluminescence triggered by electrochemical reactions. Due to the unique excitation mode and inherent low background, ECL has been a powerful analytical technique to be widely used in biosensing and imaging. As an
Hui Sun, Ping Zhou, Bin Su
doaj   +1 more source

23Na relaxometry: An overview of theory and applications

open access: yesMagnetic Resonance Letters, 2023
23Na is a nuclear magnetic resonance (NMR)-active isotope with a nuclear spin quantum number of 3/2. 23Na relaxation phenomenon is at the core of 23Na NMR measurement and analysis.
Yifan Song   +4 more
doaj   +1 more source

Phonon-assisted up-conversion photoluminescence of quantum dots

open access: yesNature Communications, 2021
Up-conversion photoluminescence in colloidal quantum dots is generally believed to be mediated by thermal activation from defect states. Here, the authors reveal that highly-efficient up-conversion photoluminescence instead is related to electron-phonon ...
Zikang Ye   +6 more
doaj   +1 more source

Imaging electrochemiluminescence layer to dissect concentration-dependent light intensity for accurate quantitative analysis

open access: yesAdvanced Sensor and Energy Materials, 2022
As one of most advanced transduction techniques, electrochemiluminescence (ECL), such as that generated by tris(2,2′-bipyridyl)ruthenium (Ru(bpy)32+), has been extensively used in chemical sensing and analysis, but the reaction mechanism has not been ...
Wen-Xuan Fu   +3 more
doaj   +1 more source

Anomalous efficiency elevation of quantum-dot light-emitting diodes induced by operational degradation

open access: yesNature Communications, 2023
Quantum-dot light-emitting diodes promise a new generation of high-performance and solution-processed electroluminescent light sources. Understanding the operational degradation mechanisms of quantum-dot light-emitting diodes is crucial for their ...
Siyu He   +10 more
doaj   +1 more source

Molecular stacking controlling coherent and incoherent singlet fission in polymorph rubrene single crystals

open access: yesAggregate, 2023
Singlet fission (SF) is an appealing process where one photoexcited singlet transforms to two triplets, which can overcome thermalization energy loss and improve solar cell efficiency.
Yanping Liu   +4 more
doaj   +1 more source

Coupled Electronic and Anharmonic Structural Dynamics for Carrier Self‐Trapping in Photovoltaic Antimony Chalcogenides

open access: yesAdvanced Science, 2022
V–VI antimony chalcogenide semiconductors have shown exciting potentials for thin film photovoltaic applications. However, their solar cell efficiencies are strongly hampered by anomalously large voltage loss (>0.6 V), whose origin remains controversial ...
Weijian Tao   +9 more
doaj   +1 more source

Highly Resolved and Robust Dynamic X‐Ray Imaging Using Perovskite Glass‐Ceramic Scintillator with Reduced Light Scattering

open access: yesAdvanced Science, 2021
All‐inorganic perovskite quantum dots (QDs) CsPbX3 (X = Cl, Br, and I) have recently emerged as a new promising class of X‐ray scintillators. However, the instability of perovskite QDs and the strong optical scattering of the thick opaque QD scintillator
Wenbo Ma   +14 more
doaj   +1 more source

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