EFFECTS OF DEPOSITION PARAMETERS AND OXYGEN ADDITION ON PROPERTIES OF SPUTTERED INDIUM TIN OXIDE FILMS

Indium tin oxide (ITO) films were sputtered on corning glass substrate. Oxygen admixture and sputtering deposition parameters were optimized to obtain the highest transparency as well as lowest resistivity. Structural, electrical and optical properties of the films were then examined. Increasing deposition rate and film thickness changed the crystallographic orientation from (222)  to (400) and (440), as well as higher  surface roughness. It was necessary to apply substrate heating during reposition to get films with better crystallinity. The lowest resistivity of 5.36 x 10-4 Ω•cm was obtained at 750 nm film thickness. The films’ resistivity was increased by addition of oxygen up to 2% in the argon sputtering gas. All films showed over 85% transmittance in the visible wavelength range, possible for applications in photovoltaic and display devices. Keywords: characterization, indium semiconductor, sputtering, thin films, tin oxid

PERTIMBANGAN HAKIM TERHADAP KETERANGAN TERDAKWA DALAM MENJATUHKAN PUTUSAN PEMIDANAAN

Dalam Pasal 184 Ayat (1) KUHAP dijelaskan bahwa keterangan terdakwa dalam persidangan tidak cukup untuk membuktikan terdakwa telah bersalah melakukan suatu tindak pidana tanpa didukung oleh alat-alat bukti lainya. Penelitian ini bertujuan untuk mengetahui pertimbangan hakim terhadap keterangan terdakwa dalam menjatuhkan putusan pemidanaan kepada satpam pada saat bertugas pada  Putusan Nomor: 372/Pid.B/2020/PN.Pdg Penelitian ini merupakan penelitian  hokum yang in-concreto terhadap putusan  Putusan Nomor: 372/Pid.B/2020/PN.Pdg Data yang digunakan dalam penelitian ini yaitu data sekunder. Terhadap semua data dan bahan yang diperoleh dari hasil penelitian disusun dan dianalisis secara kualitatif, dan disajikan dalam bentuk deskriptif kualitatif. Berdasarkan hasil pembahasan dan analisis diperoleh bahwa Pertimbangan hakim Terhadap Keterangan Terdakwa dalam Menjatuhkan Putusan Pemidanaan kepada satpam pada saat bertugas pada Putusan Nomor: 372/Pid.B/2020/PN.Pdg dan Nomor: 373/Pid.B/2020/PN.Pdg telah mencakup pada pertimbangan yuridis dan non-yuridis

Rapid Processing of In-Doped ZnO by Spray Pyrolysis from Environment-Friendly Precursor Solutions

This study focused on the deposition of indium-doped zinc oxide (IZO) films at high growth rates by ultrasonic spray pyrolysis. We investigated the influence of processing parameters, such as temperature and solution flow rate, on the structural, optical, and electrical film properties. For all depositions, low-cost and low-toxicity aqueous solutions and metal salt precursors were used. Through the optimization of the spraying parameters and pattern, a spatially homogeneous IZO layer with transparency greater than 80%, resistivity of 3.82 × 10−3 Ω·cm for a thickness of 1800 nm (sheet resistance of 21.2 Ω/sq), Hall carrier density of 1.36 × 1020 cm−3, Hall mobility of 12.01 cm2 V−1 s−1, and work function of 4.4 eV was obtained. These films are suitable for implementation in optoelectronic and photovoltaic devices.Peer Reviewe

Flexible Transparent Heater Fabricated from Spray-Coated In:ZnO/Ag-NWs/In:ZnO Multilayers on Polyimide Foil

A flexible transparent heater is presented, based on an all-sprayed composite architecture of indium-doped zinc oxide (IZO) layers that sandwich a network of silver nanowires, on a polyimide-foil substrate. This architecture could be materialized through the development of a low-temperature (240 °C) spray-pyrolysis process for the IZO layers, which is compatible with the thermal stability of the transparent polyimide substrate and allows for the formation of compact and transparent layers, without precipitates. The IZO layers entirely embed the silver nanowires, offering protection against environmental degradation and decreasing the junction resistance of the nanowire network. The resulting transparent heaters have a high mean transmittance of 0.76 (including the substrate) and sheet resistance of 7.5 Ω/sq. A steady-state temperature of ~130 °C is achieved at an applied bias of 3.5 V, with fast heater response times, with a time constant of ~4 s The heater is mechanically stable, reaching or surpassing 100 °C (at 3.5 V), under tensile, respectively, compressive-bending stress. This work shows that high-performance transparent heaters can be fabricated using all-sprayed oxide/silver-nanowire composite coatings, that are compatible with large-scale and low-cost production

Nanocrystalline Ga2O3 films deposited by spray pyrolysis from water-based solutions on glass and TCO substrates

A low-cost and up-scalable fabrication method for high-quality gallium oxide films using spray pyrolysis from water-based solutions and moderate temperatures is presented. The solution chemistry and spraying process parameters were optimized to obtain homogeneous films on glass and three different transparent conducting oxide substrates. Structural and optical film properties of the deposited nanocrystalline Ga2O3 were evaluated by scanning electron microscopy, grazing-incidence X-ray diffraction, atomic force microscopy and optical spectroscopy. The elemental composition of the surface and the bulk film was analyzed by X-ray photoemission spectroscopy depth profiling. To show the applicability of the deposited Ga2O3 in electronic devices, the electronic valence region of the material was studied by ultraviolet photoemission spectroscopy, resulting in an energy level diagram of the material