2024-03-28T20:32:44Z
https://meral.edu.mm/oai
oai:meral.edu.mm:recid/309
2021-12-13T01:52:44Z
1582963788001:1582966489046
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Lanthanum Aluminate Silicon Based Photovoltaic Cell Dependency on Temperature
Aye Aye Thant
Chaw Loon Thu
The materials used in this work were regent grade of lanthanum chloride (LaCl3 .7H2O) and
aluminium chloride (AlCl3 . 6H2O). The lanthanum aluninate (La1-xAlxO3: x = 0.02 mol) clear
solution was firstly performed by adding appropriate amount of (NH4OH) into the mixture
solution. Lanthanum aluminate sol-gel was refluxed with oil–bath at 110˚C for 3hr. Lanthanum
aluminate (LAO2) thin film was formed on defect-free p-Si (100) substrate by spin coating
technique. To change the coating layer into oxide film, they were sintered at 400˚C to 600˚C in
open atmosphere. X-ray Diffraction Analysis (XRD) and Scanning Electron Microscopy
(SEM) measurement were made to examine the film morphology and microstructural
properties. As a result of XRD investigation, the observed peaks were matched with those of
standard library file. Film thickness was obtained by cross-sectional SEM images. 1/C2-V
characteristics were also observed for film qualification. I-V characteristics were measured
under illumination by sodium lamp. The best power conversion efficiency of 10.65%
photovoltaic cell with the LAO2 layer annealed at 500 °C showed a short-circuit current (Isc) of
1.22 x 10-5 A, an open-circuit voltage (Voc) of 3.19V and a fill factor (Ff) of 0.39 under
illumination by sodium lamp.
2019
http://hdl.handle.net/20.500.12678/0000000309
https://meral.edu.mm/records/309