Conditions for optimal efficiency of PCBM-based terahertz modulators
Source abstract
Abstract
We demonstrate the conditions for optimal modulation efficiency of active terahertz modulators based on phenyl-C61-butyric acid methyl ester (PCBM)-silicon hybrid structures. Highly efficient active control of the terahertz wave modulation was realized by controlling organic film thickness, annealing temperature, and laser excitation wavelength. Under the optimal conditions, the modulation efficiency reached nearly 100%. Charge distributions measured with a near-field scanning microwave microscanning technique corroborated the fact that the increase of photo-excited carriers due to the PCBM–silicon hybrid structure enables the enhancement of active modulation efficiency.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Terahertz technology and applications · Photonic and Optical Devices · Photonic Crystals and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
S. LSI Metrology & Inspection, Samsung Electronics 1 , Yongin 17113, Korea
Department of Physics, Sogang University 2 , Seoul 121-742, Korea
Integrated Optics Laboratory, Advanced Photonics Research Institute, GIST 3 , Gwangju 500-712, Korea
Department of Physics and Optoelectronics Convergence Research Center, Chonnam National University 4 , Gwangju 500-757, Korea
Funding
Gwangju Institute of Science and Technology · National Research Foundation of Korea
References (31)
Show source-provided references
1. 2009
2. Nat. Photonics · 2007 · 1 · 9710.1038/nphoton.2007.3 ↗
3. Appl. Phys. Lett. · 1998 · 72 · 64410.1063/1.120832 ↗
4. Appl. Phys. Lett. · 2000 · 76 · 282110.1063/1.126484 ↗
5. Appl. Phys. Lett. · 2004 · 84 · 355510.1063/1.1723689 ↗
6. Nature · 2006 · 444 · 59710.1038/nature05343 ↗
7. Phys. Rev. B · 2007 · 75 · 23530510.1103/physrevb.75.235305 ↗
8. Phys. Rev. Lett. · 2008 · 100 · 12390110.1103/physrevlett.100.123901 ↗
9. Nat. Photonics · 2009 · 3 · 14810.1038/nphoton.2009.3 ↗
10. Opt. Express · 2008 · 16 · 1512310.1364/oe.16.015123 ↗
11. Nat. Commun. · 2012 · 3 · 78010.1038/ncomms1787 ↗
12. Nat. Mater. · 2012 · 11 · 93610.1038/nmat3433 ↗
13. Nano Lett. · 2010 · 10 · 206410.1021/nl1002153 ↗
14. Appl. Phys. Lett. · 2011 · 99 · 06110810.1063/1.3626591 ↗
15. Appl. Phys. Lett. · 2013 · 103 · 15111610.1063/1.4825170 ↗
16. Opt. Lett. · 2013 · 38 · 463210.1364/ol.38.004632 ↗
17. Opt. Lett. · 2014 · 39 · 611010.1364/ol.39.006110 ↗
18. Appl. Phys. Lett. · 2014 · 105 · 01111510.1063/1.4887376 ↗
19. Appl. Phys. Lett. · 2015 · 106 · 05330310.1063/1.4907651 ↗
20. Appl. Phys. Lett. · 2016 · 108 · 10330110.1063/1.4943648 ↗
21. Sci. Rep. · 2016 · 6 · 3791210.1038/srep37912 ↗
22. Jpn. J. Appl. Phys. · 2016 · 55 · 03DC1210.7567/jjap.55.03dc12 ↗
23. Appl. Phys. Lett. · 1990 · 56 · 169410.1063/1.103120 ↗
24. Appl. Phys. Lett. · 2000 · 76 · 322110.1063/1.126587 ↗
25. Opt. Eng. · 2012 · 51 · 11900210.1117/1.oe.51.11.119002 ↗
26. Appl. Phys. Lett. · 2005 · 86 · 15350610.1063/1.1904713 ↗
27. J. Magn. Magn. Mater. · 2009 · 321 · 248310.1016/j.jmmm.2009.03.068 ↗
28. Appl. Phys. Lett. · 2002 · 81 · 179110.1063/1.1505118 ↗
29. Adv. Funct. Mater. · 2005 · 15 · 161710.1002/adfm.200500211 ↗
30. Appl. Phys. Lett. · 2013 · 103 · 20330110.1063/1.4830037 ↗
31. Nanotechnology · 2016 · 27 · 24560110.1088/0957-4484/27/24/245601 ↗