CIGS (Copper (Cu), Indium (In), Galium Ga), Diselenide (Se2)) solar cell is the developing technology because of its low cost production and reliability of CIGS semiconductor itself. In this paper the difference of total current density and the IV curve of the CIGS solar cell will be shown when polysilicon was used as a contact window to replace aluminum doped zinc oxide (ZnO;Al) and the thickness of molybdenum and CIGS varied. The thickness of CIGS is varied to get the best thickness in order to obtain a good total current density since polysilicon is not widely used as an electrode in solar cell. Current density of CIGS solar cell will be shown in the figures at the result section.
Zinc Oxide (ZnO) is a metal oxide semiconductor that used for organic light emitting diode (OLEDs) applications. The ZnO nanotetrapods nanotetrapod of various time depositions has been synthesized using thermal chemical vapor deposition (thermal-CVD) method. In this study, the synthesizations were deposit at 30 minutes and 50 minutes to investigate the time deposition effect of ZnO nanotetrapods. The optical properties were obtained using photoluminescence (PL). The PL spectra show that the sample at 30 minutes is the highest intensity for ultraviolet (UV) emission due to crystallization of ZnO nanotetrapods. X-Ray Diffraction was deposited using Broker AXS D8 Advance with Cu K radiation. It is show the highest peak can observe for sample 30 minutes. From FESEM images, it was found that the length of ZnO nanotetrapods increased with increased of time deposition.
Nanocomposite based on zinc oxide (ZnO) nanostructures and poly [2-methoxy-5(2' -ethylhexyloxy)-phenylene vinylene) (MEH-PPV) of various weight percent have been obtained using sol-gel method. The substrates were deposit at 0.1 wt% to 0.4 wt% of ZnO with pure MEH-PPV to investigate the concentration effect of MEH-PPV/ZnO nanocomposite. The structural properties were characterized using FESEM and AFM to obtain the morphology of nanocomposite. From the AFM, it was found that the roughness is more uniform. The optical properties were obtained using ultraviolet-visible spectrometer (UV-Vis). It was found that the transmittance band increased with decreased of weight percent of ZnO nanostructures. For photoluminescence (PL) spectra shows that 0.4 wt% of ZnO at visible emission is due to emission characterisitic of PPV backbone which is arise from the relaxtion of excited π-electron to the ground state. This study will provide better performance and suitable for optoelectronic device especially OLEDs application.
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