Results 101 to 110 of about 20,087,803 (245)

Energetic Offset in Organic Solar Cells‐ Importance, Confusion and Outlook

open access: yesAdvanced Materials, EarlyView.
Energetic offsets in organic solar cells (OSCs) remain a subject of debate due to measurement‐ and lab‐dependent discrepancies. This Perspective clarifies the physical origins of these variations and identifies temperature‐dependent electro‐optical methods as a reliable approach to obtain consistent offset values.
Nakul Jain   +5 more
wiley   +1 more source

Spatial properties of entangled two-photon absorption

open access: yes, 2022
We experimentally study entangled two-photon absorption in Rhodamine 6G as a function of the spatial properties of a high flux of broadband entangled photon pairs.
Djorovic, A.   +8 more
core  

Transparent Perovskite Light‐Emitting Diodes with Conductive Oxide Top Electrodes

open access: yesAdvanced Materials, EarlyView.
Transparent perovskite light‐emitting diodes (TrPeLEDs) enable simultaneous display and transparency, expanding application possibilities. Using a metal oxide buffer layer and pulsed laser deposition, TrPeLEDs with diverse compositions and architectures are demonstrated.
Michele Forzatti   +11 more
wiley   +1 more source

Cavity-induced two-photon absorption in unidentical atoms

open access: yes, 1998
We predict the existence of cavity-induced two-photon absorption in unidentical atoms, and demonstrate the nonclassical character of this two-photon absorption. We show the effects of photon statistics on cavity induced two-photon absorption.
Kim, M. S., Agarwal, G. S.
core   +1 more source

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

open access: yesAdvanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

Two-photon absorption in silicon using real density matrix approach

open access: yes
Two-photon absorption in indirect gap semiconductors is an frequently encountered, but not well-understood phenomenon. To address this, the Real Density Matrix Approach is applied to describe two-photon absorption in silicon through the excitonic ...
David Knez (14384325)   +9 more
core   +1 more source

Two-Photon Absorption and Saturable Absorption of Mid-IR in Graphene

open access: yes, 2018
We report on the response of graphene to high intensity mid-IR radiation and show that graphene exhibits saturable absorption and significant two-photon absorption in the spectral region from 1.55 $\mu$m to 3.50 $\mu$m (0.35 eV to 0.80 eV).
David J. Ottaway (14381877)   +4 more
core   +1 more source

Leaftronics: Bio‐Fractal Scaffolds From Leaf Venation for Low‐Waste Electronics

open access: yesAdvanced Materials, EarlyView.
“Leaftronics” transforms naturally evolved leaf venation into quasi‐fractal scaffolds for sustainable electronics. Polymer‐infiltrated leaf skeletons can be used to fabricate ultra‐smooth, reflow‐ and thin‐film‐compatible decomposable substrates, while making the same lignocellulose networks conducting results in flexible transparent electrodes.
Rakesh Rajendran Nair   +3 more
wiley   +1 more source

Experimental feasibility of molecular two-photon absorption with isolated time-frequency-entangled photon pairs

open access: yes, 2020
Entangled photon pairs have been promised to deliver a substantial quantum advantage for two-photon absorption spectroscopy. However, recent work has challenged the previously reported magnitude of quantum enhancement in two-photon absorption.
Tiemo Landes (10221956)   +5 more
core   +1 more source

Observation of Two-Photon Induced Excited-State Absorption Phenomena in C60 and C70 Derivatives

open access: yes, 2012
Four fullerene dyads with different cabazole units, named a, b, c, d, were studied by using a femtosecond laser with 780nm wavelength using Z-scan methods. Interestingly, all of them show strong two-photon induced excitedstate absorption behaviors, which
欧阳新华
core   +1 more source

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