Improvement in optical and structural properties of ZnO thin film through hexagonal nanopillar formation to improve the efficiency of a Si–ZnO heterojunction solar cell

2016 ◽  
Vol 49 (20) ◽  
pp. 205104 ◽  
Author(s):  
S Maity ◽  
C T Bhunia ◽  
P P Sahu
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Structural Properties ◽  
Heterojunction Solar Cell ◽  
Zno Thin Film

Interdigitated back-contact heterojunction solar cell concept for liquid phase crystallized thin-film silicon on glass

2015 ◽  
Vol 24 (5) ◽  
pp. 716-724 ◽  
Author(s):  
Paul Sonntag ◽  
Jan Haschke ◽  
Sven Kühnapfel ◽  
Tim Frijnts ◽  
Daniel Amkreutz ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Liquid Phase ◽  
Heterojunction Solar Cell ◽  
Back Contact ◽  
Thin Film Silicon

Effect of RF Power on the Formation and Morphology Evolution of ZnO Nanostructured Thin Films

2012 ◽  
Vol 576 ◽  
pp. 577-581 ◽  
Author(s):  
N.D.M. Sin ◽  
Mohamad Hafiz Mamat ◽  
Mohamed Zahidi Musa ◽  
S. Ahmad ◽  
A. Abdul Aziz ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Structural Properties ◽  
Zno Thin Films ◽  
Morphology Evolution ◽  
Zno Thin Film ◽  
Rf Power ◽  
Nanostructured Thin Films ◽  
Atomic Force ◽  
Current Voltage

The effect of RF power on the formation and morphology evolution of ZnO nanostructured thin films deposited by magnetron sputtering are presented. This project focused on electrical, optical and structural properties of ZnO thin films. The effect of variation of RF power at 50 watt-250 watt at 200 °C on glass substrate of the ZnO thin films was investigated. The thin films were examined for electrical properties and optical properties using two point probe current-voltage (I-V) measurement (Keithley 2400) and UV-Vis-NIR spectrophotometer (JASCO 670) respectively. The structural properties were characterized using field emission scanning electron microscope (FESEM) (JEOL JSM 7600F) and atomic force microscope (AFM) (Park System XE-100). The IV measurement indicated that at RF power 200 watt the conductivity of ZnO thin film show the highest. All films show high UV absorption properties using UV-VIS spectrophotometer (JASCO 670). The root means square (rms) roughness for ZnO thin film were about 4 nm measured using AFM. The image form FESEM observed that transformation of structure size started to change as the RF power increase.

scholarly journals The Effect of Post-Heating Time of ZnO Thin Film on the Efficiency of ZnO/Hylocereus polyrhizus DSSC

2019 ◽  
pp. 70-74
Author(s):  
Motlan Motlan ◽  
Nurdin Siregar
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Counter Electrode ◽  
Sol Gel ◽  
Aluminum Foil ◽  
Heating Time ◽  
Electrical Circuit ◽  
Zno Thin Film ◽  
Working Electrode ◽  
Hylocereus Polyrhizus

The efficiency of hylocereus polyrhizus based Dye-Sensitized Solar Cell (DSSC) has been improved by the ZnO thin-film that was used as a working electrode for DSSC. The ZnO thin-film was improved by varying the post-heating time during the annealing process which was synthesized by a sol-gel spin coating method. The preparation of dye solution was conducted by cutting the hylocereus polyrhizus into small pieces and put into a beaker glass. The hylocereus polyrhizus then was crushed with a mortar until it was soft. In order to obtain the extracted ethanol was added and leaf for 24 hours in a dark room. The extract then was filtered by using filtered paper and put into a container that wrapped an aluminum foil and kept in place to avoid the extract from sun rays. The dye sample is then UV-Vis tested to find the highest absorbance value and wavelength of the sample. The extract solution was used to form the ZnO/dye solar cell where the ZnO thin film dipped into natural dyes solution with the ZnO thin films facing up for 24 hours to let the dye adsorbed by the ZnO thin film. The ZnO thin film was dipped into extract hylocereus polyrhizus function as a working electrode and put together with a platinum counter electrode that separated by Surilyn. The pasting with Surilyn was conducted by pushing the working electrode and counter electrode and heated on a hot plate of the temperature of 70-80oC to perfectly put together. The working electrode which was put together to the platinum counter electrode was injected with liquid electrolytes through a small hole on the platinum counter electrode. Electrical testing is carried out after the DSSC has been assembled by making an electrical circuit between the DSSC with a measuring instrument. The sensitizer value of the hylocereus polyrhizus was 0.652 au, at the wavelength of 538 nm. The maximum power of the DSSC was 0.10030 w/cm2 and the efficiency of 0.0274%.

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