Umer Mehmood, Khalil Harrabi, Ibnelwaleed A. Hussein, Nagendiran Shanmugam, A. Mekki, M. Mekki, M.A. McLachlan, A study on stability of active layer of Polymer Solar Cells: Effect of UV–visible light with different conditions, Polym. Bull. 76, 525 (2019)


M. Younas, M. A. Gondal, U. Mehmood, K. Harrabi, Z. H. Yamani, F. A. Al-Sulaiman, , Int. J. Energy Res. 42, 3957 (2018). Performance enhancement of dye-sensitized solar cells via cosensitization of ruthenizer Z907 and organic sensitizer SQ2


U. Mehmood, M. I. Malik, A. U.  Khan,  I.A. Hussein,  K. Harrabi, A. Al-Ahmed, Materials Letters, 220, 222 (2018). Effect of outdoor temperature on the power-conversion efficiency of newly synthesized organic photosensitizer based dye-sensitized solar cells


K. Harrabi, A. Mekki, S. Kunwar, and J. P. Maneval, , J. Appl. Phys. 123, 083901 (2018). Pulse measurement of the hot spot current in a NbTiN superconducting filament


P. Steiger, J. Zhang, K. Harrabi, I.A. Hussein, J.M. Downing, M.A. McLachlan.Thin Solid Films, 645 417–423 (2018). Hydrothermally grown ZnO electrodes for improved organic photovoltaic devices.


E. Collin, W. Bailey, P. Fozooni, P. G. Frayne, P. Glasson, K. Harrabi, and M. J. Lea, Phys. Rev.  B 96, 235427 (2017) Temperature-dependent energy levels of electrons on liquid helium


J. Zhang, M. Morbidoni, C. H. Burgess, J. Wu, T. Du, K. Harrabi, D. J. Payne, J. R. Durrant,  and M. A. McLachlan,  Crystal Growth & Design 17, 6559 (2017), Nanoscale Structure−Property Relationships in Low-Temperature Solution-Processed Electron Transport Layers for Organic Photovoltaics.


K. Harrabi, J. P. Maneval, IEEE Trans. Appl. Supercond.27, 4, 7779009 (2017). Measurements of the Delay Time between a Critical Current Pulse and the First Resistive Response in Superconducting Niobium Strips.

K. Harrabi , F. O. Bakare, F. Oktasendra, J. P. Maneval, J. Supercond. Nov. Magn. 30, 5 , 1349 (2017). Temperature Dependence of the Phonon Escape Time Deduced from the Nucleation Time of Phase Slip Center in Superconducting NbTiN Thin Film.

A. Mekki, A. Dere, Kwadwo Mensah-Darkwa, Ahmed Al-Ghamdid, R.K. Guptae, K. Harrabi, W.A. Farooqf, Farid El-Tantawyg, F. Yakuphanoglua, Synthetic Met. Synthetic Met. 217, 43 (2016). Graphene controlled organic photodetectors.

K. Harrabi, F. Oktasendra, K. Gasmi, G. Berdiyorov, A. Mekki, and J.P. Maneval, IEEE Trans. Appl. Supercond. 26, 7399353 (2016). Phonon escape time deduced from the time of nucleation of hot spots in superconducting niobium Filaments.

K. Harrabi, IEEE Trans. Appl. Supercond, 26, 7397940 (2016). Temperature dependence of the heat escape time deduced from the nucleation of a dissipative zone in superconducting YBa2Cu3O7 Filament.

A. Mekki, R.O Ocaya, A. Dere, A. A. Al-Ghamdie, K. Harrabi, F. Yakuphanoglua,11, 153 (2016) J. Nanoelectronics and Optoelectronics, . Organic semiconductor: Graphene-oxide/p-Si photodiodes.

J. Zhang, Jorge C. D. Faria, M. Morbidoni, Y. Porte, C. H. Burgess, K. Harrabi, and M. A. McLachlan. Adv. Electron. Mater. 1600008,  (2016). Low-Temperature Solution-Processed Electron Transport Layers for Inverted Polymer Solar Cells.

A. Mekki, R.O. Ocaya, A. Dere, A. A. Al-Ghamdid, K. Harrabi, F. Yakuphanogluc, Synthetic Metals 213, 47 (2016). New photodiodes based graphene-organic semiconductor hybrid materials.

U. Mehmood, I.A Hussein, K. Harrabi, N. Tabet and G. R. Berdiyorov. RSC ADVANCES, 6, 7897, (2016). Enhanced photovoltaic performance with co-sensitization of a ruthenium(II) sensitizer and an organic dye in dye-sensitized solar cells.

U. Mehmood, K. Harrabi, I. A. Hussein, S. Ahmed. IEEE JOURNAL OF PHOTOVOLTAICS 6, 196 (2016). Enhanced Photovoltaic Performance of Dye-Sensitized Solar Cells Using TiO2-Graphene Microplatelets Hybrid Photoanode .

M. R. Reddy, G. N. Redda, U. Mehmood I. A. Hussein, S. U. Rahman, K. Harrabi, B. V. Subba Reddy, SYNTHESIS-STUTTGART 47, 3315, (2015). Copper(II) Triflate Catalyzed Synthesis of 2,4-Disubstituted Oxazoles from alpha- Diazoketones.

U. Mehmood, I. A. Hussein, K. Harrabi, M.B.Mekki, S. Ahmed, N. Tabet.   SOLAR ENERGY MATERIALS AND SOLAR CELLS, 140, 174 ( 2015). Hybrid TiO2-multiwall carbon nanotube (MWCNTs) photoanodes for efficient dye sensitized solar cells (DSSCs).

U. Mehmood, A., Shakeel; I. A. Hussein, K. Harrabi.  PHOTONICS AND NANOSTRUCTURES-FUNDAMENTALS AND APPLICATIONS, 16, 34 (2015). Improving the efficiency of dye sensitized solar cells by TiO2-graphene nanocomposite photoanode. 

G. Berdiyorov, K. Harrabi, U. Mehmood, F. M. Peeters, N. Tabet, J. Zhang, I. A. Hussein, and M. A. McLachlan, J. Appl. Phys. 118, 025101 (2015) Derivatization and diffusive motion of molecular fullerenes: Ab initio and atomistic simulations.

U. Mehmood, S. Ahmed, I. A. Hussein ,K. Harrabi, , Electrochimi. Acta 173 607 (2015). Co-sensitization of TiO2-MWCNTs hybrid anode for efficient dye-sensitized solar cells/

U. Mehmood, U-S. Rahman, K. Harrabi, I. A. Hussein, B. V. S. Reddy, Advances in Materials Science and Engineering, 403585 (2015). Recent advances in dye sensitized solar cells.

K. Harrabi, AIP ADVANCES 5, 037102 (2015). Resistive states created in superconducting NbTiN filaments by an electrical current pulse.

K. Harrabi, J. Supercond. Nov. Magn. 28, 573 (2015) Temperature Elevation of Current Driven Phase-Slip Centers in YBa2Cu3O7 Strip.

G. Berdiyorov, K. Harrabi, J.P. Maneval, and F. M. Peeters, Supercond. Sci. Technol. 28, 025004 (2015). Effect of pinning on the response of superconducting strips to an external pulsed current.

U. Mehmood, I. A. Hussein, K. Harrabi, S. Ahmed, Advances in Materials Science and Engineering, 86730 (2015). Density Functional Theory Study on the Electronic Structures of Oxadiazole Based Dyes as Photosensitizer for Dye Sensitized Solar Cells.

G. Berdiyorov, K. Harrabi, F. Oktasendra, K. Gasmi, A. I. Mansour, J.P. Maneval, and F. M. Peeters, Phys. Rev. B 90, 134505 (2014) Dynamics of current-driven phase-slip centers in superconducting strips.

K. Harrabi, A.F. Salem, K. Ziq, A.I. Mansour, S. Kunwar, J.P. Maneval, and G. Berdiyorov, Appl. Phys. A 117, 2033 (2014) Characterization of the current-induced resistive spots in superconducting YBa2Cu3O7 strips.

U. Mehmood, S. Rahman, K. Harrabi, I. A. Hussein, and B. V. S. Reddy, Advances in Materials Science and Engineering,  974782 (2014). Recent Advances in Dye Sensitized Solar Cells

J.P. Maneval, K. Harrabi, F. Chibane, M. Rosticher, F. R Ladan, P. Mathieu, IEEE Trans. Appl. Supercond. 23, 2200604 (2013). Temperature Profile of Hotspots in Narrow Current-Biased Superconducting Strips.

K. Harrabi,  J. Supercond. Nov. Magn. 26, 3231 (2013). Fabrication of Flux Qubit with a Mechanical Degree of Freedom.

K. Harrabi, J. Supercond. Nov. Magn. 26, 1865 (2013) Hotspot Temperatures Reached in Current-Driven Superconducting Niobium Filaments.

F. Yan, J. Bylander, Simon Gustavsson, Fumiki Yoshihara, K. Harrabi, David G. Cory, T. P. Orlando,Y. Nakamura, J. S. Tsai, W. D.Oliver, Phys. Rev. B 85, 174521 (2012). Spectroscopy of low-frequency noise and its temperature dependence in asuperconducting qubit .

K. Harrabi, Y. Pashkin, O. Astafiev, S. Kafanov, T. F. Li, J. S. Tsai, Appl. Phys. A 108, 7 (2012). Fabrication and characterization of Al nanomechanical resonators for coupling to nanoelectronic devices .

S. Gustavsson, J. Bylander, F. Yan, P. Forn-Diaz, V. Bolkhovsky, D. Braje, G. Fitch, K. Harrabi, D. Lennon, J. Miloshi, P. Murphy, R. Slattery, S. Spector, B. Turek, T. Weir, P.B. Welander, F. Yoshihara, D.G. Cory, Y. Nakamura, T.P. Orlando, and W.D. Oliver, Phys. Rev. Lett. 108, 170503 (2012). Driven Dynamics and Rotary Echo of a Qubit Tunably Coupled to a Harmonic Oscillator .

J. Bylander, S. Gustavsson, F. Yan, F. Yoshihara, K.  Harrabi, G. Fitch, D. G. Cory, Y. Nakamura, J. S. Tsai, W. D. Oliver, Nature Phys. 7, 565 (2011) Noise spectroscopy through dynamical decoupling with a superconducting flux qubit

K. Harrabi, F.-R. Ladan, Vu Dinh Lam, J.-P. Maneval, J.-F. Hamet, J.-C. Villégier, R.W. Bland, J. Low Temp. Phys. 157, 36 (2009). Current-Temperature Diagram of Resistive States in Long Superconducting YBa2Cu3O7 Strips .

S. Ashhab, A. O. Niskanen, K. Harrabi, Y. Nakamura, T. Picot, P.C. de Groot, C. J. P. M. Harmans, J. E. Mooij, and F. Nori, Phys. Rev. B 77, 014510 (2008). Interqubit coupling mediated by a highexcitation- energy quantum object.

F.-R. Ladan, K. Harrabi, M. Rosticher, P. Mathieu, J.-P. Maneval, C. Villard,  J. Low Temp. Phys. 153,103 (2008) Current-Temperature Diagram of Resistive States in Long Superconducting Niobium Filaments.
K. Harrabi, F. Yoshihara, A. O. Niskanen, Y. Nakamura, J. S. Tsai,  Phys. Rev. B 79, 020507 R (2009). Engineered selection rules for tunable coupling in a superconducting quantum circuit.

A. O. Niskanen, K. Harrabi, F. Yoshihara, Y. Nakamura, S. Lloyd, J. S. Tsai, Science 316, 723 (2007). Quantum coherent tunable coupling of superconducting qubits.

F. Yoshihara, K. Harrabi, A. O. Niskanen, Y. Nakamura, J. S. Tsai,  Phys. Rev. Lett. 97, 167001 (2006). Decoherence of flux qubits due to 1/f flux noise.

A. O. Niskanen, K. Harrabi, F. Yoshihara, Y. Nakamura, J. S. Tsai, Phys. Rev. B 74, 220503 (2006). Spectroscopy of three strongly coupled flux qubits .

P. Glasson, G. Papageorgiou, K. Harrabi, V.Antonov, E.Collin, P.Fozooni, P.G.Frayne, M.J.Lea, Y.Mukharsky and D.G.Rees, J. Phys. Chem. Solids, 66, 1539 (2005). Trapping single electrons on liquid helium.

G. Papageorgiou, P.H. Glasson, K. Harrabi, E. Collin, P. Fozooni, P.G.Frayne, Y. Mukharsky and M.J. Lea.  App. Phys. Lett. 86, 153106 (2005). Counting individual trapped electrons on liquid helium.

P.H. Glasson, E. Collin, P. Fozooni, P.G. Frayne, K. Harrabi, W.Bailey, G. Papageorgiou, Y. Mukharsky and M.J.Lea.  Physica E 22, 761-766 (2004). Confined electron crystals and Rydberg states on liquid helium.

G. Papageorgiou, Yu. Mukharsky, K. Harrabi, P. Glasson, P. Fozooni, P.G. Frayne, E. Collin, and M.J. Lea. Physica E, 18, 179181 (2003). Detecting electrons on helium with a single-electron transistor (SET).

E. Collin, W. Bailey, P. Fozooni, P.G. Frayne, P.Glasson, K. Harrabi, M.J. Lea and G. Papageorgiou. Phys. Rev. Lett. 89, 245301 (2002). Microwave saturation of the Rydberg states of electrons on helium.

E. Collin, W. Bailey, P.Fozooni, P.G. Frayne, P.Glasson, K. Harrabi, M.J.Lea and G. Papageorgiou. Physica E 18, 186 (2003). Microwave saturation and the Rabi frequency of the Rydberg states of electrons on helium.

J-P Maneval, Kh. Harrabi, Vu Dinh Lam, F. Boyer, and F-R Ladan, J. Supercond., Incorp. Nov. Magn., 15, 417 (2002). Extended Domain of Existence for PSCs in Superconductors.

Kh. Harrabi, N. Cheenne, Vu Dinh Lam, F-R Ladan, and J-P Maneval, J. Of Supercond., Incorporating Novel Magn. 14, 325 (2001). Temporal evolution of normal hot spots in current-driven superconducting films.

J-P Maneval, F. Boyer, Kh. Harrabi, and F-R Ladan  J. Of Supercond., Incorporating Novel Magn., 14, 347 (2001) Spontaneous and ligh-induced resistive transitions in superconducting thin film bridges.

Kh. Harrabi, N. Cheenne, F. Boyer, F. Chibane, Ph. Delord, F-R Ladan and J-P Maneval Supercond. Sci. Technol. 13, 1222 (2000). Thermal boundary resistance of YBa2Cu3O7 on MgO films deduced from the transient V(I) response.

Kh. Harrabi, F-R Ladan and J-P Maneval, Int. J. Mod. Physics B13, 3516 (2000) Predicting film thermal coupling from the current-induced S -> N transition.