Solvothermal Synthesis and Ultrafast Photonics of Black Phosphorus Quantum Dots

Advanced Optical Materials - Tập 4 Số 8 - Trang 1223-1229 - 2016
Yanhua Xu1,2,3,4, Zhiteng Wang4, Zhinan Guo1,4, Hao Huang1, Quanlan Xiao1,4, Han Zhang2,4, Xue‐Feng Yu1
1Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
2Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha 410082, China
3Key Laboratory of New Electric Functional Materials of Guangxi Colleges and Universities, Guangxi Teachers Education University, Nanning 530023, China
4Shenzhen Key Laboratory of Two-dimensional Materials and Devices/Shenzhen Engineering Laboratory of Phosphorene and Optoelectronics, SZU-NUS Collaborative Innovation Center for Optoelectronic Science and Technology and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong, Province, Shenzhen University, Shenzhen, 518060 China

Tóm tắt

Ultrasmall black phosphorus quantum dots (BPQDs) with an average size of 2.1 ± 0.9 nm are synthesized by using a solvothermal method in a N‐methyl‐2‐pyrrolidone solution. Verified by femto‐second laser Z‐scan measurement, BPQDs exhibit excellent nonlinear optical response with a modulation depth of about 36% and a saturable intensity of about 3.3 GW cm−2. By using BPQDs as optical saturable absorber, the ultrashort pulse with a pulse duration of about 1.08 ps centered at a wavelength of 1567.5 nm is generated in mode‐locked fiber laser. These results suggest that BPQDs may be developed as another kind of promising nanomaterial for ultrafast photonics.

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Advanced Optical Materials

Tập 4 Số 8

1223-1229

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