Citation

Sirkeli, Vadim P. and Yilmazoglu, Oktay and Ong, Duu Sheng and Preu, Sascha and Kuppers, Franko and Hartnagel, Hans L. (2017) Resonant Tunneling and Quantum Cascading for Optimum Room-Temperature Generation of THz Signals. IEEE Transactions on Electron Devices, 64 (8). pp. 3482-3488. ISSN 0018-9383

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Abstract

We report on the results of a numerical study of quantum transport in ZnSe-based resonant-tunneling diodes (RTDs) and quantum cascade oscillators (QCOs) with fixed and unequal barrier heights. It is found that the negative differential resistance exists up to room temperature in the current-voltage characteristics of the RTD and QCO devices with unequal barrier heights. Further, we demonstrate that QCOs with unequal barrier heights have a better frequency and power performance characteristics compared with RTDs and are more beneficial for high-power terahertz generation at room temperature. For the best QCO device with 100 periods of quantum cascading, a maximum output power of ~7-9 μW for the operating frequency range from 0.1 to ~6 THz at room temperature was achieved.

Item Type:	Article
Uncontrolled Keywords:	Oscillators, Resistance-capacitance, Quantum capacitance, II-VI semiconductor materials, Zinc compounds, Oscillators, Quantum cascade lasers, Resistance, Power generation
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800-8360 Electronics
Divisions:	Faculty of Engineering (FOE)
Depositing User:	Ms Suzilawati Abu Samah
Date Deposited:	22 Oct 2020 16:20
Last Modified:	22 Oct 2020 16:20
URII:	http://shdl.mmu.edu.my/id/eprint/7069

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