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Infrared Chameleon: Graphene Phonons & the Impact of their Interplay on Photodetection

Laros, James H.; Howell, Stephen W.; Goldflam, Michael G.; Peters, D.W.; Ohta, Taisuke O.; Nogan, John N.; McDonald, Anthony E.; Hamilton, Allister B.; Ruiz, Isaac R.; Shaffer, Ryan A.

Abstract not provided.

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TYPE Presentation YEAR 2017

OSTI OSTI

Infrared Chameleon

Laros, James H.; Goldflam, Michael G.; Peters, D.W.; Howell, Stephen W.; Ohta, Taisuke O.; Ruiz, Isaac R.; Nogan, John N.; Hamilton, Allister B.; Shaffer, Ryan A.

Abstract not provided.

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TYPE Presentation YEAR 2016

OSTI

Self-Heating and Failure in Scalable Graphene Devices

Scientific Reports

Laros, James H.; Shaffer, Ryan A.; McDonald, Anthony E.; Hamilton, Allister B.; Nogan, John N.; Ohta, Taisuke O.; Howell, Stephen W.

Self-heating induced failure of graphene devices synthesized from both chemical vapor deposition (CVD) and epitaxial means is compared using a combination of infrared thermography and Raman imaging. Despite a larger thermal resistance, CVD devices dissipate >3x the amount of power before failure than their epitaxial counterparts. The discrepancy arises due to morphological irregularities implicit to the graphene synthesis method that induce localized heating. Morphology, rather than thermal resistance, therefore dictates power handling limits in graphene devices.

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TYPE Journal Article YEAR 2016

DOI OSTI Scopus