Oxygen vacancy enhancement promoting strong green emission through surface modification in ZnO thin film

MAK Purbayanto, E Nurfani, O Chichvarina, J Ding… - Applied Surface …, 2018 - Elsevier
We study the effect of oxygen vacancy enhancement in ZnO thin films through the surface
modification using H 2 annealing. After H 2 annealing, low-temperature PL spectra show the …

Energy-level variations of Cu-doped ZnO fabricated through sol-gel processing

LCK Liau, JS Huang - Journal of Alloys and Compounds, 2017 - Elsevier
We evaluated the properties and energy levels of Cu-doped ZnO (CZO) crystals synthesized
in different Cu ion additions through sol-gel processing. Different CZO crystals were …

Origin of fast-response photocurrent in ZnO thin film

E Nurfani, MAK Purbayanto, T Aono, K Takase… - Optical Materials, 2018 - Elsevier
We study the origin of fast-response photocurrent in ZnO system grown by dc-unbalanced
magnetron sputtering. Current-voltage (IV) measurements show that ZnO thin film is …

Polarization behavior of zinc oxide thin films studied by temperature dependent spectroscopic ellipsometry

R Kurniawan, IM Sutjahja, T Winata… - Optical Materials …, 2017 - opg.optica.org
We report on the influence of temperature on the polarization behavior of highly oriented
ZnO thin film. First, the investigation of crystal structure change is studied, providing …

The electronic structure and magnetic property of the Mn doped β-Ga2O3

X Wang, R Quhe, Y Zhi, Z Liu, Y Huang, X Dai… - Superlattices and …, 2019 - Elsevier
Ga 2 O 3 is a promising candidate for high power, high voltage devices. In this work, the
band structure of the pure β-Ga 2 O 3 and the impact of orbital coupling on the Mn doped β …

Role of Ga-substitution in ZnO on defect states, carrier density, mobility and UV sensing

PK Mishra, S Ayaz, T Srivastava, S Tiwari… - Journal of Materials …, 2019 - Springer
Abstract Gallium (Ga 3+) doped ZnO with compositions Zn 1− x Ga x O (0≤ x≤ 0.0468) is
prepared using the sol–gel method. ZnO Wurtzite structure having space group P6 3 mc is …

Tuning the point-defect evolution, optical transitions, and absorption edge of zinc oxide film by thermal exposure during molecular beam epitaxy growth

Y Darma, S Muhammady, YN Hendri, E Sustini… - Materials Science in …, 2019 - Elsevier
We study the optical properties of ZnO films grown using plasma-assisted molecular beam
epitaxy. We employ three different growth temperatures (T growth) of 298, 373, and 423 K …

Influence of Ti do** on the performance of a ZnO-based photodetector

E Nurfani, N Zuhairah, R Kurniawan… - Materials Research …, 2017 - iopscience.iop.org
We study the influence of Ti do** on the photodetection properties of zinc oxide (ZnO) thin
films. The pure ZnO and ZnO: 3% Ti (TZO) films were deposited on Si substrates by using …

Strong modification of excitons and optical conductivity for different dielectric environments in ZnO films

Y Darma, R Marlina, TS Herng, J Ding… - IEEE Photonics …, 2016 - ieeexplore.ieee.org
We study the evolution of excitons and optical conductivity of ZnO films on two different
substrates (Pt and quartz) using three different Cu do** concentrations known as Cu: ZnO …

Plasmon–exciton interaction and screening of exciton in ZnO-based thin film on bulk Pt as analyzed by spectroscopic ellipsometry

Y Darma, CD Satrya, R Marlina… - Japanese Journal of …, 2016 - iopscience.iop.org
We study plasmon–exciton interaction in ZnO-based thin film on bulk Pt by using high
resolution spectroscopic ellipsometry. ZnO films on quartz are used as reference. This study …