Synthesis of cadmium telluride nanoparticles for photovoltaic application
Cadmium Telluride (CdTe) nanorods with diameter of 3.7 nm and length of about 50 nm were successfully synthesized using the hot coordinating solvent method. Phase and composition characterization showed that the nanorods grew along the [001] direction and have the wurtzite structure. A systematic...
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| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
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2010
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| Online Access: | http://hdl.handle.net/10356/35655 |
| _version_ | 1811684683615830016 |
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| author | Chua, Kheng Hwee. |
| author2 | Lam Yeng Ming |
| author_facet | Lam Yeng Ming Chua, Kheng Hwee. |
| author_sort | Chua, Kheng Hwee. |
| collection | NTU |
| description | Cadmium Telluride (CdTe) nanorods with diameter of 3.7 nm and length of about 50
nm were successfully synthesized using the hot coordinating solvent method. Phase
and composition characterization showed that the nanorods grew along the [001]
direction and have the wurtzite structure. A systematic investigation of the reaction
parameters, including the types of ligand for both Cd and Te complexes, the reaction
temperature and the Cd:Te mole ratio, had been carried out. For the first time, it was
concluded from our study that Te can be fully dissolved in the phosphine ligands at
elevated temperature of about 190oC. From our results, it can be concluded that the
optimum conditions to achieve high aspect ratio nanorods require the use of
dodecylphosphonic acid (DDPA) and trioctylphosphine (TOP) as the complexing ligands
for Cd and Te respectively and a high precursor concentration. It has also been
observed that a high reaction temperature (≈290oC) favors high aspect ratio nanorod
growth as compared with low reaction temperature (250oC).The effective monomer
model can be used to explain the shape evolution of CdTe nanorods. The fabricated
solar cells had Voc of 0.09978 V, Jsc of -0.03731 mA/cm2 and a Fill Factor of 0.28. The
highest PCE recorded was 0.00103%. Presence of ligands on CdTe nanocrystal surfaces,
unreacted precursor complexes and also the agglomeration of the nanorods could have
limited the PCE by acting as recombination centers and affect the mobility of charge. |
| first_indexed | 2024-10-01T04:32:32Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/35655 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:32:32Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | ntu-10356/356552023-03-04T15:42:07Z Synthesis of cadmium telluride nanoparticles for photovoltaic application Chua, Kheng Hwee. Lam Yeng Ming School of Materials Science and Engineering DRNTU::Engineering::Materials::Energy materials Cadmium Telluride (CdTe) nanorods with diameter of 3.7 nm and length of about 50 nm were successfully synthesized using the hot coordinating solvent method. Phase and composition characterization showed that the nanorods grew along the [001] direction and have the wurtzite structure. A systematic investigation of the reaction parameters, including the types of ligand for both Cd and Te complexes, the reaction temperature and the Cd:Te mole ratio, had been carried out. For the first time, it was concluded from our study that Te can be fully dissolved in the phosphine ligands at elevated temperature of about 190oC. From our results, it can be concluded that the optimum conditions to achieve high aspect ratio nanorods require the use of dodecylphosphonic acid (DDPA) and trioctylphosphine (TOP) as the complexing ligands for Cd and Te respectively and a high precursor concentration. It has also been observed that a high reaction temperature (≈290oC) favors high aspect ratio nanorod growth as compared with low reaction temperature (250oC).The effective monomer model can be used to explain the shape evolution of CdTe nanorods. The fabricated solar cells had Voc of 0.09978 V, Jsc of -0.03731 mA/cm2 and a Fill Factor of 0.28. The highest PCE recorded was 0.00103%. Presence of ligands on CdTe nanocrystal surfaces, unreacted precursor complexes and also the agglomeration of the nanorods could have limited the PCE by acting as recombination centers and affect the mobility of charge. Bachelor of Engineering (Materials Engineering) 2010-04-22T04:32:56Z 2010-04-22T04:32:56Z 2010 2010 Final Year Project (FYP) http://hdl.handle.net/10356/35655 en Nanyang Technological University 48 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Materials::Energy materials Chua, Kheng Hwee. Synthesis of cadmium telluride nanoparticles for photovoltaic application |
| title | Synthesis of cadmium telluride nanoparticles for photovoltaic application |
| title_full | Synthesis of cadmium telluride nanoparticles for photovoltaic application |
| title_fullStr | Synthesis of cadmium telluride nanoparticles for photovoltaic application |
| title_full_unstemmed | Synthesis of cadmium telluride nanoparticles for photovoltaic application |
| title_short | Synthesis of cadmium telluride nanoparticles for photovoltaic application |
| title_sort | synthesis of cadmium telluride nanoparticles for photovoltaic application |
| topic | DRNTU::Engineering::Materials::Energy materials |
| url | http://hdl.handle.net/10356/35655 |
| work_keys_str_mv | AT chuakhenghwee synthesisofcadmiumtelluridenanoparticlesforphotovoltaicapplication |