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Papers by antara antu
The Journal of Physical Chemistry Letters
Cloud Computing – CLOUD 2021, 2022
Liangfeng Sun, Advisor Colloidal lead sulfide (PbS) nanoribbons are synthesized using organometal... more Liangfeng Sun, Advisor Colloidal lead sulfide (PbS) nanoribbons are synthesized using organometallic precursors with a chloroalkane co-solvent. The few-nanometer-thick nanoribbons have a typical width of 20 nm and a length more than 50 nm. The thickness of the nanoribbons can be tuned accurately by the reaction temperature, ranging from 1.4 nm to 2.8 nm. Moreover, by changing temperature we can tune the thickness rationally as well as tune the band gap energy to obtain the optimum band structure. A Significant blue-shift of the photoluminescence peak is observed, indicating stronger quantum confinement in the PbS core with reduced thickness. The width of the nanoribbon is close to the Bohr radius of the exciton in PbS, resulting in an additional confinement energy that increases the energy gap. In contrast to rectangular shaped PbS nanosheets, the smaller lateral size of nanoribbons makes them brighter. At room temperatures, well-passivated nanoribbons in trioctylphosphine (TOP) hav...
Chemistry of Materials, 2018
Colloidal lead sulfide (PbS) nanoribbons are synthesized using organometallic precursors with chl... more Colloidal lead sulfide (PbS) nanoribbons are synthesized using organometallic precursors with chloroalkane cosolvents. The few-atom-thick nanoribbons have a typical width 20 nm and a length more than 50 nm. Different from a nanosheet where the quantum confinement energy is mainly determined by the thickness, the narrow width of the nanoribbon has an additional contribution to the increase of energy gap. In contrast to nanosheets, the nanoribbons are much brighter. At room temperatures, well-passivated nanoribbons have achieved more than 30% photoluminescence quantum yield in the infrared spectrum, competing with the well-developed colloidal lead chalcogenide quantum dots of the similar energy gap.
MRS Advances, 2017
We report a robust method by which colloidal PbS nanosheets can be synthesized with nearly 100% s... more We report a robust method by which colloidal PbS nanosheets can be synthesized with nearly 100% success rate. It is achieved by replacing the lead acetate by lead oxide for preparation of the lead precursor. Acetic acid either injected externally or produced during the reaction can significantly affect the growth of the nanosheets. The existence of water in the reaction solution makes the nanosheets smaller in lateral size while the purity of trioctylphosphine has no significant effect on the nanosheet growth.
physica status solidi (RRL) - Rapid Research Letters, 2016
... Some features of this site may not work without it. Performance improvement of PV solar syste... more ... Some features of this site may not work without it. Performance improvement of PV solar system by diffused reflection. Antu, Antara Debnath; Sarkar, Md. Robiul Islam; Alam, Naser Md. Isteaque. URI: http://hdl.handle.net/10361/842. Date: 2010-08. Abstract: ... Ayesha Abed Library ...
Chemistry of Materials, 2016
Bulletin of the American Physical Society, 2016
2020 International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery (CyberC)
Proceedings of the nanoGe Fall Meeting 2018
The Journal of Physical Chemistry Letters
Cloud Computing – CLOUD 2021, 2022
Liangfeng Sun, Advisor Colloidal lead sulfide (PbS) nanoribbons are synthesized using organometal... more Liangfeng Sun, Advisor Colloidal lead sulfide (PbS) nanoribbons are synthesized using organometallic precursors with a chloroalkane co-solvent. The few-nanometer-thick nanoribbons have a typical width of 20 nm and a length more than 50 nm. The thickness of the nanoribbons can be tuned accurately by the reaction temperature, ranging from 1.4 nm to 2.8 nm. Moreover, by changing temperature we can tune the thickness rationally as well as tune the band gap energy to obtain the optimum band structure. A Significant blue-shift of the photoluminescence peak is observed, indicating stronger quantum confinement in the PbS core with reduced thickness. The width of the nanoribbon is close to the Bohr radius of the exciton in PbS, resulting in an additional confinement energy that increases the energy gap. In contrast to rectangular shaped PbS nanosheets, the smaller lateral size of nanoribbons makes them brighter. At room temperatures, well-passivated nanoribbons in trioctylphosphine (TOP) hav...
Chemistry of Materials, 2018
Colloidal lead sulfide (PbS) nanoribbons are synthesized using organometallic precursors with chl... more Colloidal lead sulfide (PbS) nanoribbons are synthesized using organometallic precursors with chloroalkane cosolvents. The few-atom-thick nanoribbons have a typical width 20 nm and a length more than 50 nm. Different from a nanosheet where the quantum confinement energy is mainly determined by the thickness, the narrow width of the nanoribbon has an additional contribution to the increase of energy gap. In contrast to nanosheets, the nanoribbons are much brighter. At room temperatures, well-passivated nanoribbons have achieved more than 30% photoluminescence quantum yield in the infrared spectrum, competing with the well-developed colloidal lead chalcogenide quantum dots of the similar energy gap.
MRS Advances, 2017
We report a robust method by which colloidal PbS nanosheets can be synthesized with nearly 100% s... more We report a robust method by which colloidal PbS nanosheets can be synthesized with nearly 100% success rate. It is achieved by replacing the lead acetate by lead oxide for preparation of the lead precursor. Acetic acid either injected externally or produced during the reaction can significantly affect the growth of the nanosheets. The existence of water in the reaction solution makes the nanosheets smaller in lateral size while the purity of trioctylphosphine has no significant effect on the nanosheet growth.
physica status solidi (RRL) - Rapid Research Letters, 2016
... Some features of this site may not work without it. Performance improvement of PV solar syste... more ... Some features of this site may not work without it. Performance improvement of PV solar system by diffused reflection. Antu, Antara Debnath; Sarkar, Md. Robiul Islam; Alam, Naser Md. Isteaque. URI: http://hdl.handle.net/10361/842. Date: 2010-08. Abstract: ... Ayesha Abed Library ...
Chemistry of Materials, 2016
Bulletin of the American Physical Society, 2016
2020 International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery (CyberC)
Proceedings of the nanoGe Fall Meeting 2018