Controlling the Lateral Size and Excitonic Properties of Colloidal PbS Nanosheets
Controlling the Lateral Size and Excitonic Properties of Colloidal PbS Nanosheets
复制标题
控制胶体 PbS 纳米片的横向尺寸和激子性质
DOI:
10.1002/cnma.201900656
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发表时间:
2020
期刊:
影响因子:
3.8
通讯作者:
Sun, Liangfeng
中科院分区:
文献类型:
--
作者:
Premathilaka, Shashini M.;Tang, Yiteng;Jiang, Zhoufeng;MDS Weeraddana, Tharaka;Debnath Antu, Antara;Bischoff, Seth;Sun, Liangfeng
By changing the precursor lead‐to‐sulfur molar ratio in the synthesis of colloidal PbS nanosheets, the lateral size of the nanosheet can be tuned in a wide range from 100 nm to 1500 nm while keeping its thickness around 2.4 nm. Using chloroalkane molecules with a long carbon‐chain as the capping ligands can further reduce the lateral size down to 20 nm. The concentration of the chloroalkane in the reaction solution and the reaction temperature also have significant effects on the lateral size. At room temperature, nanosheets with a small lateral size exhibit a narrow light‐emission linewidth. The same nanosheets also show a sharp exciton peak near the band edge in the optical absorption spectrum.
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DOI:
10.1039/c5cp03140k
发表时间:
2015
期刊:
Physical chemistry chemical physics : PCCP
影响因子:
--
作者:
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影响因子:
8.6
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影响因子:
13.3
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通讯作者:
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影响因子:
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作者:
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