Journal ArticleDOI
Bipolar doping and band-gap anomalies in delafossite transparent conductive oxides.
Reads0
Chats0
TLDR
It is shown that both properties are results of a large disparity between the fundamental gap and the apparent optical gap, a finding that could lead to a breakthrough in the study of bipolarly dopable wide-gap semiconductor oxides.Abstract:
Doping wide-gap materials p type is highly desirable but often difficult. This makes the recent discovery of p-type delafossite oxides, CuM(III)O2, very attractive. The CuM(III)O2 also show unique and unexplained physical properties: Increasing band gap from M(III) = Al,Ga, to In, not seen in conventional semiconductors. The largest gap CuInO2 can be mysteriously doped both n and p type but not the smaller gaps CuAlO2 and CuGaO2. Here, we show that both properties are results of a large disparity between the fundamental gap and the apparent optical gap, a finding that could lead to a breakthrough in the study of bipolarly dopable wide-gap semiconductor oxides.read more
Citations
More filters
Journal ArticleDOI
Density functional theory study of 3R– and 2H–CuAlO2 in tensile stress
TL;DR: In this paper, the authors reported a direct computational result of a phase transformation from the 3R phase to the 2H phase in CuAlO2 with the application of tensile stress using the first-principles density functional theory calculations.
Journal ArticleDOI
First-principles prediction of a promising p-type transparent conductive material CsGeCl3
Dan Huang,Dan Huang,Yu-Jun Zhao,Zhiping Ju,Li-Yong Gan,Xin-Man Chen,Changsheng Li,Chun-Mei Yao,Jin Guo +8 more
TL;DR: In this paper, the p-type defect Ge vacancy dominates its intrinsic defects with a shallow transition level, and the calculated hole effective masses are low in CsGeCl3, a compound with valence band maximum from ns2 cations.
Journal ArticleDOI
Band gap determination in multi-band-gap CuFeO 2 delafossite epitaxial thin film by photoconductivity
S. Vojkovic,J. Fernandez,S. Elgueta,F. E. Vega,S. Rojas,R. A. Wheatley,Birger Seifert,S. Wallentowitz,Alejandro L. Cabrera +8 more
TL;DR: In this paper, the photoconductivity of epitaxial delafossite CuFeO2 film grown by pulsed laser deposition was determined within a wavelength range of 450-1100nm.
Journal ArticleDOI
Solution-synthesized p-type CuMnO2 and n-type ZnO to form the core-shell nanowires for photo and gas sensing
TL;DR: In this article , the nanostructured p-n heterojunction has been synthesized by solution method and the n-ZnO/p-CuMnO2 core-shell nanowires revealed rectification and ultralow-leakage properties.
Journal ArticleDOI
First-principles screening visible-light active delafossite ABO2 structures for photocatalytic application
TL;DR: In this paper, the stabilities, electronic, and optical properties of 40 kinds of Ag and Cu based delafossite ABO2 materials have been investigated to tap the potential of photocatalytic applications by performing first-principle calculations.