Results 71 to 80 of about 281,496 (245)

Raman imaging and electronic properties of graphene

open access: yes, 2007
Graphite is a well-studied material with known electronic and optical properties. Graphene, on the other hand, which is just one layer of carbon atoms arranged in a hexagonal lattice, has been studied theoretically for quite some time but has only ...
A. C. Ferrari   +11 more
core   +1 more source

Polymer/Inorganic Hole Transport Layer for Low-Temperature-Processed Perovskite Solar Cells

open access: yesEnergies, 2020
In the search for improvements in perovskite solar cells (PSCs), several different aspects are currently being addressed, including an increase in the stability and a reduction in the hysteresis.
Neda Irannejad   +5 more
doaj   +1 more source

Switching Off Hysteresis in Perovskite Solar Cells by Fine‐Tuning Energy Levels of Extraction Layers [PDF]

open access: yes, 2018
Lead halide perovskites often suffer from a strong hysteretic behavior on their j–V response in photovoltaic devices that has been correlated with slow ion migration.
Almora   +25 more
core   +2 more sources

A triazole containing co-polymer for use as an electron transport material in multilayer LEDs [PDF]

open access: yes, 1997
We report investigations into a poly(1,20-(10,13-didecyl)distyrylbenzene-co-1,2-[p-ethylphenyl)]triazole) (TRIDSB) electron transport material and its incorporation into single and multilayer LEDs.
Bradley, DDC   +3 more
core   +1 more source

Management of transition dipoles in organic hole-transporting materials under solar irradiation for perovskite solar cells

open access: yesNature Communications, 2018
In perovskite solar cells, the excited state property of hole-transport layer is not usually considered for the devices. Here the authors design organic hole-transport materials with high transition dipoles having extended lifetime at the excited states ...
Song Ah Ok   +11 more
doaj   +1 more source

Microscopic Quantum Transport Processes of Out‐of‐Plane Charge Flow in 2D Semiconductors Analyzed by a Fowler–Nordheim Tunneling Probe

open access: yesAdvanced Electronic Materials, 2023
Weak interlayer couplings at 2D van der Waals (vdW) interfaces fundamentally distinguish out‐of‐plane charge flow, the information carrier in vdW‐assembled vertical electronic and optical devices, from the in‐plane band transport processes. Here, the out‐
Dong Hoon Shin   +9 more
doaj   +1 more source

Coherent exciton transport in semiconductors [PDF]

open access: yes, 2014
We review the topic of Bose-Einstein condensation of excitons in semiconductors, focusing on the signatures of the macroscopic order of the exciton condensate.Comment: Some references were updated with respect to the published version.
Rontani, Massimo, Sham, L. J.
core   +2 more sources

Assessing the suitability of copper thiocyanate as a hole-transport layer in inverted CsSnI3 perovskite photovoltaics

open access: yesScientific Reports, 2018
We report the findings of a study into the suitability of copper (I) thiocyanate (CuSCN) as a hole-transport layer in inverted photovoltaic (PV) devices based on the black gamma phase (B-γ) of CsSnI3 perovskite.
Anjana Wijesekara   +5 more
doaj   +1 more source

The Selection of Anode and Cathode Materials for Top Emission Organic Light-Emitting Diodes

open access: yesInternational Journal of Photoenergy, 2022
In this study top emission organic light-emitting diodes (TE-OLED) were successfully fabricated on flexible PET/multilayer disordered silver nanonetwork (MDSN) substrate with conventional LiF/Al as a semitransparent cathode and Ag as a reflective anode ...
Fuh-Shyang Juang   +5 more
doaj   +1 more source

Frictional Drag between Two Dilute Two-Dimensional Hole Layers

open access: yes, 2002
We report drag measurements on dilute double layer two-dimensional hole systems in the regime of r_s=19~39. We observed a strong enhancement of the drag over the simple Boltzmann calculations of Coulomb interaction, and deviations from the T^2 dependence
A. G. Rojo   +23 more
core   +1 more source

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