Tunnel diode was invented in August 1957 by Leo Esaki, Yuriko Kurose, and Takashi Suzuki.
A tunnel diode is a type of semiconductor diode that has effectively “negative resistance” due to the quantum mechanical effect called tunneling.
Working principle:
Quantum mechanical effect called tunneling.
Reference Source:
[1] Wikipedia Contributors. “Tunnel Diode.” Wikipedia, Wikimedia Foundation, 19 May 2021, en.wikipedia.org/wiki/Tunnel_diode. Accessed 2 Aug. 2021.
[2] Electrical4U. “Tunnel Diode: Definition, Characteristics & Applications | Electrical4U.” Electrical4U, 24 Feb. 2012, www.electrical4u.com/tunnel-diode/. Accessed 2 Aug. 2021.
[3] Wikipedia Contributors. Leo Esaki. Wikipedia. Published December 30, 2021. Accessed January 8, 2022. https://en.wikipedia.org/wiki/Leo_Esaki.