Journal ArticleDOI
Acceptor Levels in p-Type Cu2O: Rationalizing Theory and Experiment
TLDR
In this paper, the formation of $p$-type defects in transparent conducting oxides was investigated, giving rise to singleparticle levels that are deep in the band gap, consistent with experimentally observed activated, polaronic conduction.Abstract:
Understanding conduction in ${\mathrm{Cu}}_{2}\mathrm{O}$ is vital to the optimization of Cu-based $p$-type transparent conducting oxides. Using a screened hybrid--density-functional approach we have investigated the formation of $p$-type defects in ${\mathrm{Cu}}_{2}\mathrm{O}$ giving rise to single-particle levels that are deep in the band gap, consistent with experimentally observed activated, polaronic conduction. Our calculated transition levels for simple and split copper vacancies explain the source of the two distinct hole states seen in DLTS experiments. The necessity of techniques that go beyond the present generalized-gradient- and local-density-approximation techniques for accurately describing $p$-type defects in Cu(I)-based oxides is discussed.read more
Citations
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Journal ArticleDOI
Binary copper oxide semiconductors: From materials towards devices
Bruno K. Meyer,Angelika Polity,Daniel Reppin,Martin Becker,P. Hering,Peter J. Klar,Th. Sander,Christian T. Reindl,J. Benz,Martin Eickhoff,Christian Heiliger,Markus Heinemann,Jürgen Bläsing,Alois Krost,S. Shokovets,C. Müller,Carsten Ronning +16 more
TL;DR: In this article, the performance of three distinctly different phases, Cu2O, Cu4O3, and CuO, of this binary semiconductor can be prepared by thin-film deposition techniques, which differ in the oxidation state of copper.
Journal ArticleDOI
Recent Developments in p-Type Oxide Semiconductor Materials and Devices.
TL;DR: P-type oxides still lag in performance behind their n-type counterparts, which have entered volume production in the display market, and recent successes along with the hurdles that stand in the way of commercial success of p-type oxide semiconductors are presented.
Journal ArticleDOI
Intrinsic n-type Defect Formation in TiO2: A Comparison of Rutile and Anatase from GGA+U Calculations
TL;DR: In this article, the formations of intrinsic n-type defects, that is, oxygen vacancies and titanium interstitials, in rutile and anatase TiO2 have been compared using GGA+U calculations.
Journal ArticleDOI
Thin-film metal oxides in organic semiconductor devices: their electronic structures, work functions and interfaces
Mark T. Greiner,Zheng-Hong Lu +1 more
TL;DR: Greiner et al. as mentioned in this paper provided a rational guide to process engineers in selecting the best suitable electrode/oxide structures for a targeted applications, which can be used as a buffer layer to modify the electrode work function.
Journal ArticleDOI
P-type transparent conducting oxides.
TL;DR: This article provides a comprehensive review on traditional and recently emergent p-TCOs, including Cu(+)-based delafossites, layered oxychalcogenides, nd (6) spinel oxides, Cr(3+-based oxides), and post-transition metal oxides with lone pair state (ns (2).
References
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Journal ArticleDOI
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set
Georg Kresse,Jürgen Furthmüller +1 more
TL;DR: A detailed description and comparison of algorithms for performing ab-initio quantum-mechanical calculations using pseudopotentials and a plane-wave basis set is presented in this article. But this is not a comparison of our algorithm with the one presented in this paper.
Journal ArticleDOI
Hybrid functionals based on a screened Coulomb potential
TL;DR: In this paper, a new hybrid density functional based on a screened Coulomb potential for the exchange interaction is proposed, which enables fast and accurate hybrid calculations, even of usually difficult metallic systems.
Journal ArticleDOI
Screened hybrid density functionals applied to solids
TL;DR: A detailed comparison of the performance of the HSE03 and PBE0 functionals for a set of archetypical solid state systems is presented, indicating that the hybrid functionals indeed often improve the description of these properties, but in several cases the results are not yet on par with standard gradient corrected functionals.
Journal ArticleDOI
Localization and delocalization errors in density functional theory and implications for band-gap prediction.
TL;DR: The band-gap problem and other systematic failures of approximate exchange-correlation functionals are explained from an analysis of total energy for fractional charges and identifies the physical nature of the error to be addressed to obtain accurate band gaps from density functional theory.
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Generalized Gradient Approximation Made Simple
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set.
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