scholarly journals KARAKTERISTIK NANOGENERATOR PIEZOELEKTRIK ZnO DOPING Co3O4

2018 ◽  
Vol 9 (1) ◽  
pp. 687-692
Author(s):  
Lukman Nulhakim
Keyword(s):  
Zno Doping

Penelitian ini bertujuan untuk meningkatkan unjuk kerja nanogenerator piezoelektrik berbasis ZnO. Metode yang digunakan untuk membuat serat ukuran nano yaitu metode elektrospinning, dimana menggunakan tegangan sebesar 15 kV dan laju aliran 2 µl/m. Penelitian ini menggunakan variasi doping 1, 2 dan 3 % kobalt oksida (Co3O4) dari berat total CoAc-ZnAc. Ukuran serat, daya dan tegangan yang dihasilkan nanogenerator piezoelektrik dipengaruhi oleh variasi doping Co3O4  terhadap ZnO. Semakin besar doping kobalt oksida semakin besar tegangan dan daya yang dihasilkan. Pada doping 3 % Co3O4 dihasilkan ukuran serat nano mencapai 71 nm, tegangan 181,33 mV dan daya 63,71 nW.

scholarly journals Influence of ZnO Doping on Property of SnO2 Ceramic Electrodes

2016 ◽  
Author(s):  
Qi-Lin Wang ◽  
Xin-You Huang ◽  
Jia Yin ◽  
Jing-Feng Sun ◽  
Meng-Xian Feng ◽  
...  
Keyword(s):  
Ceramic Electrodes ◽  
Zno Doping

scholarly journals Influence of ZnO doping on structural, optical and pH-stimulus characteristics of silica-titania nanocomposite matrix

2018 ◽  
Vol 22 (7) ◽  
pp. 826-837 ◽  
Author(s):  
Shumaila Islam ◽  
Hazri Bakhtiar ◽  
Noriah Bidin ◽  
Ali Aqeel Salim ◽  
Saira Riaz ◽  
...  
Keyword(s):  
Zno Doping ◽  
Nanocomposite Matrix

Electrical Conductivity Measurements of Al-Doped ZnO Semiconductor in High Temperature

2018 ◽  
Vol 772 ◽  
pp. 105-109
Author(s):  
Syamsul Hadi ◽  
Husein Jaya Andika ◽  
Agus Kurniawan ◽  
Suyitno
Keyword(s):  
Electrical Conductivity ◽  
Temperature Effects ◽  
Sintering Temperature ◽  
High Porosity ◽  
Conductivity Measurements ◽  
Grain Sizes ◽  
Lower Porosity ◽  
Doped Zno ◽  
Zno Semiconductor ◽  
Zno Doping

Electrical conductivity plays an important role in the performance of thermoelectric semiconductor material. This study discusses the electrical conductivity measurements of Zinc Oxide (ZnO) doping Aluminium (Al) pellet as a material of thermoelectric using four-point probe method at high temperatures. Al-doped ZnO (2 wt%) pellet was sintered at the temperature of 1100°C, 1200°C, 1300°C, 1400°C, and 1500°C with the heating rate of 8°C/minute. SEM and XRD tests show that the higher sintering temperature effects to larger grain sizes, better crystallinity, and lower porosity. There is no electrical conductivity in the sintering sample at 1100°C due to the small grain sizes and high porosity. In the sintering sample at 1500°C, the phase of ZnAl2O4erupted. The highest electrical conductivity of 5923.48S/m of Al-doped ZnO pellet was obtained at the sintering temperature of 1400°C with measurement temperature of 500°C.

ZnO Doping and Co-doping Paradigm and Properties

2010 ◽  
Vol 157 (9) ◽  
pp. H891 ◽  
Author(s):  
K. Shtereva ◽  
I. Novotny ◽  
V. Tvarozek ◽  
P. Sutta ◽  
A Vincze ◽  
...  
Keyword(s):  
Co Doping ◽  
Zno Doping

ZnO doping effects in melt-textured (Nd0.33Eu0.39Gd0.27)Ba2Cu3Oygrown from MgO seed

2006 ◽  
Vol 19 (6) ◽  
pp. L25-L28 ◽  
Author(s):  
M Muralidhar ◽  
T Kono ◽  
M Jirsa ◽  
N Sakai ◽  
M Murakami ◽  
...  
Keyword(s):  
Doping Effects ◽  
Zno Doping

ZnO doping by ion implantation

2005 ◽  
Author(s):  
M. A. Hernandez-Fenollosa ◽  
E. Rita ◽  
L. C. Damonte
Keyword(s):  
Ion Implantation ◽  
Zno Doping

Enhanced Photocatalytic Properties of Mesoporous SnO2Induced by Low Concentration ZnO Doping

2007 ◽  
Vol 7 (9) ◽  
pp. 1722-1725 ◽  
Author(s):  
Zhenhai Wen ◽  
Geng Wang ◽  
Wu Lu ◽  
Qiang Wang ◽  
Qian Zhang ◽  
...  
Keyword(s):  
Photocatalytic Properties ◽  
Low Concentration ◽  
Zno Doping

scholarly journals Synthesis and Characterization of Oxygen Doped ZnTe for Powder Phosphor Application

2005 ◽  
Vol 20 (9) ◽  
pp. 2510-2515 ◽  
Author(s):  
Z.T. Kang ◽  
H. Menkara ◽  
B.K. Wagner ◽  
C.J. Summers ◽  
V. Valdna
Keyword(s):  
Photoelectron Spectroscopy ◽  
Bulk Crystals ◽  
X Ray Diffraction ◽  
Powder Phosphor ◽  
Moisture Sensitivity ◽  
X Ray ◽  
X Ray Imaging ◽  
Imaging Application ◽  
Zno Doping

The synthesis of efficient ZnTe powder phosphors is very difficult due to its high moisture sensitivity and chemical instability during processing. In this study, an efficient ZnTe:O powder phosphor for x-ray imaging application was successfully synthesized by vacuum firing ZnTe powder prepared from ZnTe bulk crystals ball-milled in an O2 atmosphere. The phosphors were characterized by x-ray diffraction, x-ray photoelectron spectroscopy, photoluminescence, and cathodoluminescence (CL) measurements and found to exhibit a luminescent efficiency three times that of ZnTe:O prepared by ZnO doping. The ZnTe:O samples exhibited a deep red emission centered at 680 nm and a CL decay time of 1.1μs.

scholarly journals DYE SENSITIZED SOLAR CELL (DSSC) MENGGUNAKAN FILM TIPIS ZNO:B DAN EKSTRAK DYE DARI UBI UNGU

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Nurdin Siregar ◽  
Nurhabibah Purba ◽  
Motlan Motlan
Keyword(s):  
Solar Cell ◽  
Boric Acid ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Spin Coating ◽  
Sol Gel ◽  
Dye Sensitized Solar Cell ◽  
Dye Sensitized ◽  
Zno Doping

Prototype DSSCdoping boron 2,5% telah berhasil disintetis dengan metode sol-gel spin coating. Penelitian mengenai dye sensitized solar cell (DSSC) dilakukan dengan menggunakan dye dari ekstrak ubi ungu, larutan elektrolit mosalyte dan elektroda lawan berupa platina. Elektrode kerja yaitu ZnO doping boron yang dideposisikan pada kaca konduktif ITO (Indium Tin Oxide). Variasi konsentrasi doping  adalah 2.5% dengan menggunakan boron lemah yaitu boric acid (H3BO3). Lapisan film tipis ZnO:B dikarakterisasi dengan menggunakan SEM, XRD, UV-Vis Spektrometer, dan FTIR. Berdasarkan karakterisasi UV-Vis, diperoleh nilai absorbansi larutan dye ubi ungu adalah 0,67 a.u pada panjang gelombang 515 nm.  Nilai energi gap dari film tipis ZnO:B 2,5% adalah 3,161 eV. Nilai ukuran kristal yang diperoleh yaitu 29 nm. Efisiensi DSSC pada konsentrasi doping boron 2,5% adalah sebesar 0,118%.Kata Kunci : Dye Sensitized Solar Cell, Boric acid, Indium Tin Oxide, Mosalyte, ZnO:B, Boron

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