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Philip Murphy

Photonics

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Biography

Research Interests

Research Interests

I am interested on the effects of electron scattering on the transport, thermoelectric and optical properties of materials.

Felipe’s research interests are

The calculation of the resistance, piezoresistance and thermoelectricity in materials from first principles,
The effect of strain on the electron-phonon and alloy scattering of alloys from first principles,
Understanding the heating processes in nanowires,
Time dependent energy and momentum relaxation in excited materials,
Photoluminescence in Defect and Strain Engineered materials, such as Ge/InGaAs and Ge Defect Engineered Quantum Dots (Ge DEQDs).

Research Grants

Funder	Start Date	End Date	Title	Role
Science Foundation of Ireland	31-MAY-20	31-MAR-25	Orbitron: Spin, charge and light polarisation control and characterisation of CMOS compatible light sources – Leaner Future Networks.	Principal Investigator

Research Collaborators

Company	Country	Name
Tyndall National Insitute	IRELAND	Ray Duffy
Tyndall National Insitute	IRELAND	Tomasz Ochalski

Publications

Peer Reviewed Journals

Year	Journal	Publication
2019	Journal of Applied Physics	Enhancement of the electronic thermoelectric properties of bulk strained silicon-germanium alloys using the scattering relaxation times from first-principles calculations Murphy-Armando, F (2019) Enhancement of the electronic thermoelectric properties of bulk strained silicon-germanium alloys using the scattering relaxation times from first-principles calculations. : .
2019	Physical Review Letters	Ultrafast Relaxation of Symmetry-Breaking Photo-Induced Atomic Forces O’Mahony S.;Murphy-Armando F.;Murray É.;Querales-Flores J.;Savić I.;Fahy S. (2019) Ultrafast Relaxation of Symmetry-Breaking Photo-Induced Atomic Forces. : .
2018	Physical Review B	Direct and indirect band gaps in Ge under biaxial tensile strain investigated by photoluminescence and photoreflectance studies Saladukha, Dzianis; Clavel, M. B.; Murphy-Armando, Felipe; Greene-Diniz, Gabriel; Grüning, M.; Hudait, Mantu; Ochalski, Tomasz J. (2018) Direct and indirect band gaps in Ge under biaxial tensile strain investigated by photoluminescence and photoreflectance studies. : .
2018	Physical Review B	Acoustic deformation potentials of n-type PbTe from first principles Murphy, AR;Murphy-Armando, F;Fahy, S;Savic, I (2018) Acoustic deformation potentials of n-type PbTe from first principles. : AMER PHYSICAL SOC.
2015	ACS applied materials & interfaces	Heterogeneously-Grown Tunable Tensile Strained Germanium on Silicon for Photonic Devices Michael Clavel, Dzianis Saladukha, Patrick S Goley, Tomasz J Ochalski, Felipe Murphy-Armando, Robert J Bodnar, Mantu K Hudait (2015) Heterogeneously-Grown Tunable Tensile Strained Germanium on Silicon for Photonic Devices. : .
2014	IEEE Transactions On Electron Devices	Optimized Laser Thermal Annealing on Germanium for High Dopant Activation and Low Leakage Current Shayesteh, M,O’ Connell, D,Gity, F,Murphy-Armando, P,Yu, R,Huet, K,Toque-Tresonne, I,Cristiano, F,Boninelli, S,Henrichsen, HH,Nielsen, PF,Petersen, DH,Duffy, R (2014) Optimized Laser Thermal Annealing on Germanium for High Dopant Activation and Low Leakage Current. : .
2013	Physical Review Letters	Optical Emission of a Strained Direct-Band-Gap Ge Quantum Well Embedded Inside InGaAs Alloy Layers Pavarelli, N,Ochalski, TJ,Murphy-Armando, F,Huo, Y,Schmidt, M,Huyet, G,Harris, JS (2013) Optical Emission of a Strained Direct-Band-Gap Ge Quantum Well Embedded Inside InGaAs Alloy Layers. : .
2012	Journal of Applied Physics	Giant enhancement of n-type carrier mobility in highly strained germanium nanostructures (vol 109, 113703, 2011) Murphy-Armando, F;Fahy, S (2012) Giant enhancement of n-type carrier mobility in highly strained germanium nanostructures (vol 109, 113703, 2011). : AMER INST PHYSICS.
2012	Physical Review B	Giant piezoresistance in silicon-germanium alloys Murphy-Armando, F,Fahy, S (2012) Giant piezoresistance in silicon-germanium alloys. : .
2012	Physical Review B	First-principles investigation of the alloy scattering potential in dilute Si1-xCx Vaughan, MP,Murphy-Armando, F,Fahy, S (2012) First-principles investigation of the alloy scattering potential in dilute Si1-xCx. : .
2011	Journal of Applied Physics	First principles calculation of electron-phonon and alloy scattering in strained SiGe Murphy-Armando, F;Fahy, S (2011) First principles calculation of electron-phonon and alloy scattering in strained SiGe. : AMER INST PHYSICS.
2011	Chinese Journal Of Physics	Effect of strain on the deformation potentials in Ge-like SiGe Murphy-Armando, F;Fahy, S (2011) Effect of strain on the deformation potentials in Ge-like SiGe. : PHYSICAL SOC REPUBLIC CHINA.
2011	Journal of Applied Physics	Giant enhancement of n-type carrier mobility in highly strained germanium nanostructures Murphy-Armando, F;Fahy, S (2011) Giant enhancement of n-type carrier mobility in highly strained germanium nanostructures. : AMER INST PHYSICS.
2010	Nanoletters	Deformation potentials and electron-phonon coupling in silicon nanowires. Murphy-Armando F, Fagas G, Greer JC (2010) Deformation potentials and electron-phonon coupling in silicon nanowires.. : .
2008	Physical Review B	First-principles calculation of carrier-phonon scattering in n-type Si1-xGex alloys Murphy-Armando, F;Fahy, S (2008) First-principles calculation of carrier-phonon scattering in n-type Si1-xGex alloys. : AMER PHYSICAL SOC.
2007	Physical Review B	First-principles calculation of p-type alloy scattering in Si1-xGex Joyce, S;Murphy-Armando, F;Fahy, S (2007) First-principles calculation of p-type alloy scattering in Si1-xGex. : AMERICAN PHYSICAL SOC.
2006	Physical Review Letters	First-Principles Calculation of Alloy Scattering in Ge_xSi_1-x Murphy-Armando, F. and Fahy, S.; (2006) First-Principles Calculation of Alloy Scattering in Ge_xSi_1-x. : .
2004	Journal of Physics: Condensed Matter	Spin–orbit coupling and electron spin resonance for interacting electrons in carbon nanotubes De Martino, A. and Egger, R. and Murphy-Armando, F. and Hallberg, K. (2004) Spin–orbit coupling and electron spin resonance for interacting electrons in carbon nanotubes. : .

Conference Publications

Year	Publication
2016	Proc. SPIE 9755, Quantum Sensing and Nano Electronics and Photonics XIII Hudait, Mantu; Clavel, M.; Lester, L.; Saladukha, Dzianis; Ochalski, Tomasz.Murphy-Armando, Felipe. (2016) Proc. SPIE 9755, Quantum Sensing and Nano Electronics and Photonics XIII. : .
2016	Pushing the limits of silicon transistors Saladukha, D,Ochalski, TJ,Murphy-Armando, F,Clavel, MB,Hudait, MK,Witzigmann, B,Osinski, M,Arakawa, Y (2016) Pushing the limits of silicon transistors. : .
2016	2016 13TH IEEE INTERNATIONAL CONFERENCE ON SOLID-STATE AND INTEGRATED CIRCUIT TECHNOLOGY (ICSICT) Murphy-Armando, F;Liu, C;Zhao, Y;Duffy, R (2016) 2016 13TH IEEE INTERNATIONAL CONFERENCE ON SOLID-STATE AND INTEGRATED CIRCUIT TECHNOLOGY (ICSICT). : IEEE.
2014	2014 20TH INTERNATIONAL CONFERENCE ON ION IMPLANTATION TECHNOLOGY (IIT 2014) Shayesteh, M;Connell, DO;Gity, F;Murphy-Armando, F;Yu, R;Huet, K;Toque-Tresonne, I;Cristiano, F;Boninelli, S;Henrichsen, HH;Petersen, DH;Nielsen, PF;Duffy, R (2014) 2014 20TH INTERNATIONAL CONFERENCE ON ION IMPLANTATION TECHNOLOGY (IIT 2014). : IEEE.
2014	Laser thermal annealing of Ge, optimized for highly activated dopants and diode I-ON/I-OFF ratios Shayesteh, M,Connell, DO,Gity, F,Murphy-Armando, F,Yu, R,Huet, K,Toque-Tresonne, I,Cristiano, F,Boninelli, S,Henrichsen, HH,Petersen, DH,Nielsen, PF,Duffy, R, (2014) Laser thermal annealing of Ge, optimized for highly activated dopants and diode I-ON/I-OFF ratios. : .
2014	Proceedings of the International Conference on Ion Implantation Technology Shayesteh M.;O’Connell D.;Gity F.;Murphy-Armando F.;Yu R.;Huet K.;Toque-Tresonne I.;Cristiano F.;Boninelli S.;Henrichsen H.;Petersen D.;Nielsen P.;Duffy R. (2014) Proceedings of the International Conference on Ion Implantation Technology. : .
2012	2012 13th International Conference on Ultimate Integration on Silicon, ULIS 2012 Murphy-Armando F.;Fahy S. (2012) 2012 13th International Conference on Ultimate Integration on Silicon, ULIS 2012. : .
2012	Ultimate Integration on Silicon (ULIS), 2012 13th International Conference on Murphy-Armando, F. and Fahy, S. (2012) Ultimate Integration on Silicon (ULIS), 2012 13th International Conference on. : .
2011	Ultimate Integration on Silicon (ULIS), 2011 12th International Conference on Murphy-Armando, F. and Fahy, S. (2011) Ultimate Integration on Silicon (ULIS), 2011 12th International Conference on. : .
2011	Ultimate Integration on Silicon (ULIS), 2011 12th International Conference on Vaughan, MP and Murphy-Armando, F. and Fahy, S. (2011) Ultimate Integration on Silicon (ULIS), 2011 12th International Conference on. : .
2011	2011 12th International Conference on Ultimate Integration on Silicon, ULIS 2011 Vaughan M.;Murphy-Armando F.;Fahy S. (2011) 2011 12th International Conference on Ultimate Integration on Silicon, ULIS 2011. : .
2011	2011 12th International Conference on Ultimate Integration on Silicon, ULIS 2011 Murphy-Armando F.;Fahy S. (2011) 2011 12th International Conference on Ultimate Integration on Silicon, ULIS 2011. : .

Conference Contributions

Year	Publication
2012	Piezo-resistance in $ n $-type Si $ _ $$1-x$$ $ Ge $ _x $ alloys as a function of alloy composition and strain Murphy-Armando, F. and Fahy, S. (2012) Piezo-resistance in $ n $-type Si $ _ $$1-x$$ $ Ge $ _x $ alloys as a function of alloy composition and strain. : .
2008	First principles calculation of carrier-phonon scattering in Si nanowires Murphy-Armando, F. and McEniry, E.J. and Todorov, T.N. and Dundas, D. (2008) First principles calculation of carrier-phonon scattering in Si nanowires. : .
2006	Hole mobility in SiGe alloys from first principles. Joyce, S. and Murphy-Armando, F. and Fahy, S. (2006) Hole mobility in SiGe alloys from first principles.. : .
2006	First-principles calculation of phonon scattering of n-type carriers in SiGe alloys Murphy Armando, F. and Fahy, S. (2006) First-principles calculation of phonon scattering of n-type carriers in SiGe alloys. : .
2005	First-principles calculation of alloy scattering of n-type carriers in SiGe Murphy-Armando, F. and Fahy, S. (2005) First-principles calculation of alloy scattering of n-type carriers in SiGe. : .

Professional Activities

Committees

Safety Committee,

Outreach Activities

Teaching Activities

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