Photovoltaic and capacitance measurements of solar cells comprise of Al-doped CdS (QD) and hierarchical flower-like TiO2 nanostructured electrode
This work focuses on the performance of Al-doped CdS quantum dot (QD)/TiO2 solar cells. The devices were analyzed through current-voltage and capacitance-voltage measurements. It was observed from the analysis of absorption spectra that TiO2 nanowires improve the absorption of light of Al doped CdS...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-03-01
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| Series: | Results in Physics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379719315037 |
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| author | W.A. Farooq M. Atif A. Fatehmulla I.S. Yahia M.S. AlSalhi M. Fakhar-e-Alam Syed Mansoor Ali Khuram Ali Tariq Munir M. Aslam Manthrammel |
| author_facet | W.A. Farooq M. Atif A. Fatehmulla I.S. Yahia M.S. AlSalhi M. Fakhar-e-Alam Syed Mansoor Ali Khuram Ali Tariq Munir M. Aslam Manthrammel |
| author_sort | W.A. Farooq |
| collection | DOAJ |
| description | This work focuses on the performance of Al-doped CdS quantum dot (QD)/TiO2 solar cells. The devices were analyzed through current-voltage and capacitance-voltage measurements. It was observed from the analysis of absorption spectra that TiO2 nanowires improve the absorption of light of Al doped CdS QDs both in visible and near infrared (NIR) range. Current-voltage characteristics curve of Al doped CdS/TiO2 at different illuminations show that decrease in illumination (from 100 to 5 mW/cm2), affects the voltage and current correspondingly. Power-voltage curve at various intensities of light indicates that power of the solar cell increases with the increase of the bias voltage and reaches its maximum value at each value of light illumination intensity. The peak value of power at maximum illumination is 35 µW at 0.20 V and with decreasing illumination the peak value decreases. Capacitance-voltage measurements reveal that by increasing the bias voltage from −2.0 V to 0 V, the capacitance voltage indicates the rising trend. However, at 5 kHz and 10 kHz frequencies, it was observed that a marginal increase of capacitance was noticed with exceeding bias voltage. The results revealed that subsequent addition of the TiO2 nanowires significantly improved the output performance of QDSSC. |
| first_indexed | 2024-04-13T18:34:46Z |
| format | Article |
| id | doaj.art-0185d0c5108b405488bd086ab2303b4e |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-04-13T18:34:46Z |
| publishDate | 2020-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-0185d0c5108b405488bd086ab2303b4e2022-12-22T02:34:55ZengElsevierResults in Physics2211-37972020-03-0116102827Photovoltaic and capacitance measurements of solar cells comprise of Al-doped CdS (QD) and hierarchical flower-like TiO2 nanostructured electrodeW.A. Farooq0M. Atif1A. Fatehmulla2I.S. Yahia3M.S. AlSalhi4M. Fakhar-e-Alam5Syed Mansoor Ali6Khuram Ali7Tariq Munir8M. Aslam Manthrammel9Department of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi ArabiaDepartment of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; Corresponding authors.Department of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi ArabiaDepartment of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi ArabiaDepartment of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; Corresponding authors.Department of Physics, Govt. College University, 38000 Faisalabad, PakistanDepartment of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi ArabiaDepartment of Physics, University of Agriculture Faisalabad, PakistanDepartment of Physics, Govt. College University, 38000 Faisalabad, PakistanDepartment of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi ArabiaThis work focuses on the performance of Al-doped CdS quantum dot (QD)/TiO2 solar cells. The devices were analyzed through current-voltage and capacitance-voltage measurements. It was observed from the analysis of absorption spectra that TiO2 nanowires improve the absorption of light of Al doped CdS QDs both in visible and near infrared (NIR) range. Current-voltage characteristics curve of Al doped CdS/TiO2 at different illuminations show that decrease in illumination (from 100 to 5 mW/cm2), affects the voltage and current correspondingly. Power-voltage curve at various intensities of light indicates that power of the solar cell increases with the increase of the bias voltage and reaches its maximum value at each value of light illumination intensity. The peak value of power at maximum illumination is 35 µW at 0.20 V and with decreasing illumination the peak value decreases. Capacitance-voltage measurements reveal that by increasing the bias voltage from −2.0 V to 0 V, the capacitance voltage indicates the rising trend. However, at 5 kHz and 10 kHz frequencies, it was observed that a marginal increase of capacitance was noticed with exceeding bias voltage. The results revealed that subsequent addition of the TiO2 nanowires significantly improved the output performance of QDSSC.http://www.sciencedirect.com/science/article/pii/S2211379719315037Al-doped CdSQuantum dotTiO2 nanowiresCapacitance-voltageCurrent-voltage |
| spellingShingle | W.A. Farooq M. Atif A. Fatehmulla I.S. Yahia M.S. AlSalhi M. Fakhar-e-Alam Syed Mansoor Ali Khuram Ali Tariq Munir M. Aslam Manthrammel Photovoltaic and capacitance measurements of solar cells comprise of Al-doped CdS (QD) and hierarchical flower-like TiO2 nanostructured electrode Results in Physics Al-doped CdS Quantum dot TiO2 nanowires Capacitance-voltage Current-voltage |
| title | Photovoltaic and capacitance measurements of solar cells comprise of Al-doped CdS (QD) and hierarchical flower-like TiO2 nanostructured electrode |
| title_full | Photovoltaic and capacitance measurements of solar cells comprise of Al-doped CdS (QD) and hierarchical flower-like TiO2 nanostructured electrode |
| title_fullStr | Photovoltaic and capacitance measurements of solar cells comprise of Al-doped CdS (QD) and hierarchical flower-like TiO2 nanostructured electrode |
| title_full_unstemmed | Photovoltaic and capacitance measurements of solar cells comprise of Al-doped CdS (QD) and hierarchical flower-like TiO2 nanostructured electrode |
| title_short | Photovoltaic and capacitance measurements of solar cells comprise of Al-doped CdS (QD) and hierarchical flower-like TiO2 nanostructured electrode |
| title_sort | photovoltaic and capacitance measurements of solar cells comprise of al doped cds qd and hierarchical flower like tio2 nanostructured electrode |
| topic | Al-doped CdS Quantum dot TiO2 nanowires Capacitance-voltage Current-voltage |
| url | http://www.sciencedirect.com/science/article/pii/S2211379719315037 |
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