STUDI MORFOLOGI, STRUKTUR KRISTAL, DAN SIFAT OPTIK PADA NANORODS ZnO

RATIH ALIFYA AZETI, . (2016) STUDI MORFOLOGI, STRUKTUR KRISTAL, DAN SIFAT OPTIK PADA NANORODS ZnO. Sarjana thesis, UNIVERSITAS NEGERI JAKARTA.

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Abstract

Nanorods ZnO undoped dan didop Cu (1%) Al (4%) ditumbuhkan di atas substrat Indium Tin Oxide (ITO) menggunakan lapisan benih ZnO. Lapisan benih ZnO dibuat dengan metode Ultrasonic Spray Pyrolysis (USP) sedangkan nanorods ZnO ditumbuhkan dengan metode hidrotermal pada temperatur 95°C selama 2 jam. Karakterisasi menggunakan Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), dan spektrofotometer UV-Vis dilakukan untuk menganalisa morfologi, struktur kristal, dan sifat optik nanorods ZnO. Hasil SEM menunjukkan bahwa nanorods ZnO didop Cu (1%) Al (4%) memiliki diameter dan panjang yang lebih besar dari nanorods ZnO undoped. Nanorods ZnO memiliki struktur polikristal heksagonal wurtzite dengan orientasi bidang kristal dominan pada puncak difraksi (002). Pemberian dopan Cu (1%) Al (4%) meningkatkan ukuran kristal dari 20,78 nm ke 45,38 nm dan menurunkan energi celah pita dari 3,26 eV ke 3,24 eV. Puncak pada panjang gelombang lebih dari 540 nm pada spektrum fotoluminesensi nanorods ZnO dianggap berasal dari interstisi oksigen (Oi). Undoped and doped Cu (1%) Al (4%) ZnO nanorods were grown on Indium Tin Oxide (ITO) substrates using ZnO seed layer. ZnO seed layer was made by Ultrasonic Spray Pyrolysis (USP) method while ZnO nanorods was grown by hydrothermal method at the temperature of 95°C for 2 hours. Characterization using Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), and UVVis spectrophotometer were conducted to analyze the morphology, crystal structure, and optical properties of ZnO nanorods. SEM results indicate that the diameters and lengths of doped Cu (1%) Al (4%) ZnO nanorods are greater than undoped ZnO nanorods. ZnO nanorods have hexagonal wurtzite polycrystalline structure with dominant orientation of the crystal planes in the diffraction peak (002). Giving Cu (1%) Al (4%) dopant increases the crystallite size from 20.78 nm to 45.38 nm and decreases the band gap energy from 3.26 eV to 3.24 eV. Peaks at wavelengths longer than 540 nm in the photoluminescence spectrum of ZnO nanorods are ascribed to oxygen interstitial (Oi).

Item Type:	Thesis (Sarjana)
Additional Information:	1) Dr. Iwan Sugihartono, M.Si 2) Dr. Vivi Fauzia, M.Si
Subjects:	Sains > Fisika
Divisions:	FMIPA > S1 Fisika
Depositing User:	sawung yudo
Date Deposited:	13 Apr 2022 06:32
Last Modified:	13 Apr 2022 06:32
URI:	http://repository.unj.ac.id/id/eprint/26485

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