Investigators
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Alireza Nojeh

Alireza Nojeh

Professor

Department of Electrical and Computer Engineering

Research Focus

Our research activities centre on the study of the interaction of light with nanostructures leading to highly localized heating and thermal electron and photon emission. Our work involves device design, micro/nanofabrication in the cleanroom, nanostructure growth and deposition, electron and scanning-probe microscopy, building experimental apparatus such as high or ultra-high vacuum systems, electronic characterization and sensitive instrumentation, and working with lasers and optics. We complement our experimental efforts with theory and simulation using methods ranging from continuum modelling to classical molecular dynamics to first-principles, quantum-mechanical techniques such as the Hartree-Fock theory, configuration-interaction, perturbation theory and the density functional theory.

Current Projects

Heat localization in carbon nanotubes
Thermionic energy conversion
Compact electron beam devices

Selected Publications

E. Rahman, A. Nojeh. Semiconductor thermionics for next generation solar cells: photon enhanced or pure thermionic?. Nat. Commun. 12, 4622 (2021).
M.V. Moghaddam, P. Yaghoobi, G.A. Sawatzky, A. Nojeh. Photon-impenetrable, electron-permeable: the carbon nanotube forest as a medium for multi-photon thermal-photoemission.ACS Nano 9, 4064 (2015).
P. Yaghoobi, M.V. Moghaddam, A. Nojeh. “Heat trap”: light-induced localized heating and thermionic electron emission from carbon nanotube arrays.Solid State Commun.151, 1105 (2011).

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Andrew Potter