Journal ArticleDOI
Transparent p-type semiconductor: LaCuOS layered oxysulfide
Reads0
Chats0
TLDR
In this article, a transparent p-type semiconductor for optoelectronic applications, La1−xSrxCuOS, was shown to have high optical transmission at the visible and near-infrared wavelengths and an energy gap of 3.1 eV.Abstract:
La1−xSrxCuOS (x=0, 0.05) thin films prepared by radio-frequency sputtering were found to have high optical transmission (⩾70%) at the visible and near-infrared wavelengths and an energy gap of about 3.1 eV. The dc electrical conductivities of x=0 and 0.05 thin films at room temperature were 1.2×10−2 and 2.6×10−1 S cm−1, respectively. The Seebeck coefficients of these samples were positive, indicating that p-type electrical conduction is dominant in these materials. A sharp photoluminescence peak, probably originating from an interband transition, was observed at the optical absorption edge. The present study demonstrates that LaCuOS is a promising transparent p-type semiconductor for optoelectronic applications. Moreover, our material design, based on chemical modulation of the valence band, was successfully extended to oxysulfide systems.read more
Citations
More filters
Patent
LnCuO(S,Se,Te)monocrystalline thin film, its manufacturing method, and optical device or electronic device using the monocrystalline thin film
TL;DR: In this paper, a method of growing a base thin film on a single-crystal substrate, depositing an amorphous or polycrystalline LnCuOX thin film, and then annealing the laminated film at a high temperature of 500° C. or more.
Journal ArticleDOI
Recent progress in transparent oxide semiconductors: Materials and device application
TL;DR: In this article, a review of recent research progress on new transparent conductive oxide (TCO) materials and electronic and optoelectronic devices based on these materials is presented along with the fabrication method of epitaxial thin films of these materials.
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
BiCuSeO oxyselenides: new promising thermoelectric materials
TL;DR: In this paper, the authors summarized the crystal structures, microstructures, electronic structures and physical/chemical properties of BiCuSeO oxyselenides and discussed the approaches that successfully enhanced the thermoelectric performances of these materials.
Journal ArticleDOI
Identification and design principles of low hole effective mass p -type transparent conducting oxides
TL;DR: A high-throughput computational search on thousands of binary and ternary oxides identifies several highly promising compounds displaying exceptionally low hole effective masses (up to an order of magnitude lower than state-of-the-art p-type transparent conducting oxides), as well as wide band gaps.
References
More filters
Journal ArticleDOI
P-type electrical conduction in transparent thin films of CuAlO2
TL;DR: In this paper, the authors describe a strategy for identifying oxide materials that should combine p-type conductivity with good optical transparency, and illustrate the potential of this approach by reporting the properties of thin films of CuAlO2, a transparent oxide having room-temperature p- type conductivity up to 1'S'cm−1.
Journal ArticleDOI
Current injection emission from a transparent p–n junction composed of p-SrCu2O2/n-ZnO
Hiromichi Ohta,Kenichi Kawamura,Masahiro Orita,Masahiro Hirano,Nobuhiko Sarukura,Hideo Hosono +5 more
TL;DR: An ultraviolet light-emitting diode (LED) operating at room temperature was realized using a p–n heterojunction composed of transparent conductive oxides, p-SrCu2O2 and n-ZnO using conventional photolithography with the aid of reactive ion etching to fabricate the LED device.
Journal Article
Current injection emission from a transparent p-n junction composed of p-SrCu~2O~2/n-ZnO
H. Ohta,K.-i. Kawamura +1 more
Journal ArticleDOI
Electronic structure and optoelectronic properties of transparent p-type conducting CuAlO2
TL;DR: In this paper, electrical and optical properties of CuAlO2, a p-type conducting transparent oxide, were examined for the thin films prepared by the pulsed laser deposition technique, and the indirect and direct allowed optical band gaps were evaluated to be ∼1.8 and ∼3.5 eV, respectively.
Journal ArticleDOI
SrCu2O2: A p-type conductive oxide with wide band gap
TL;DR: SrCu2O2 thin films were prepared on SiO2 glass substrates by pulsed laser deposition in this article, which showed high optical transmission in visible and near-infrared regions.