Results 201 to 210 of about 18,734 (309)

High Mobility and Electrostatics in GeSn Quantum Wells With SiGeSn Barriers

open access: yesAdvanced Electronic Materials, EarlyView.
This study investigates electrical transport in GeSn quantum wells with SiGeSn barriers and characterizes hole mobilities as a function of hole density. The observed mobilities are higher than previously reported for GeSn quantum wells with similar compositions but with a Ge barrier.
Christopher R. Allemang   +7 more
wiley   +1 more source

Fractionally charged skyrmions in fractional quantum Hall effect. [PDF]

open access: yesNat Commun, 2015
Balram AC   +4 more
europepmc   +1 more source

Paired states in the even integer quantum Hall effect [PDF]

open access: green, 1996
A. M. Tikofsky, Steven A. Kivelson
openalex   +1 more source

Traps, Tail States and Their Consequences on the Open‐circuit Voltage in Organic Solar Cells

open access: yesAdvanced Energy Materials, EarlyView.
It is found that the light‐intensity dependent low‐temperature roll‐off of open‐circuit voltage in organic solar cells is explained by the intrinsic disorder in these devices, which can be either described by the full Gaussian density of states or approximated by a two‐level system, which allows for a more intuitive interpretation.
Tobias Krebs   +2 more
wiley   +1 more source

Surface transport and quantum Hall effect in ambipolar black phosphorus double quantum wells. [PDF]

open access: yesSci Adv, 2017
Tran S   +12 more
europepmc   +1 more source

Stability of Organic Photovoltaics: From Root Causes to Advanced Analytical Techniques

open access: yesAdvanced Energy Materials, EarlyView.
This review explains the causes and mechanisms of degradation in organic photovoltaics (OPVs). It explores how various factors, including heat, light, oxygen, and inherent material properties, influence OPV stability. The study categorizes degradation pathways and analyzes their impact on device performance, providing insights into the fundamental ...
Yelim Choi   +6 more
wiley   +1 more source

Epitaxial graphene homogeneity and quantum Hall effect in millimeter-scale devices. [PDF]

open access: yesCarbon N Y, 2017
Yang Y   +10 more
europepmc   +1 more source

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