• Thesis

    1. Zahidur R Chowdhury, “Facile Grown Native Oxide Based Passivation of Crystalline Silicon: A Novel Approach for Low-Temperature Synthesis of Silicon Photovoltaics”, PhD Thesis, University of Toronto, Canada, May 2012.

    2. Zahidur R Chowdhury, “Sub-micron Resolution 3D Structure Writing Using Two Photon Absorption Process”, MSc Thesis, University of Alberta, Canada, July 2006.

    3. Zahidur R Chowdhury, Rubyet Adnan, and M. M. Rahman Bhuiyan “Identification of Auto-regressive Signals in Colored Noise Using Damped Sinusoidal Model”, BSc Thesis, Bangladesh University of Engineering and Technology (BUET), Dhaka, Bangladesh, March 2002.

  • Patent

    1. N P Kherani and Z R Chowdhury, “Passivation of Silicon Surfaces Using Intermediate Ultra-thin Silicon Oxide and Outer Silicon-based Dielectric Layer”, US Patent Application No. 13/829,206, Priority date: 11 May 2012. link

  • Journal articles

    1. Zahidur R. Chowdhury and Nazir P Kherani, “Back Amorphous-Crystalline Silicon Heterojunction (BACH) Photovoltaic Device with Facile Grown Oxide - PECVD SiNx Passivation”, Progress in Photovoltaic Research and Application. [ Impact factor 7.7 ] view / link

    2. Zahidur R. Chowdhury and Nazir P Kherani, “Laterally Inherently Thin (LIT) Amorphous-Crystalline Silicon Heterojunction Photovoltaic Cell”, Progress in Photovoltaic Research and Application. [Submitted]

    3. Zahidur R. Chowdhury, Kevin Cho and Nazir P Kherani, “High-quality surface passivation of silicon using native oxide and silicon nitride layers”, Applied Physics Letters, vol. 101(2), pp. 021601, 2012. [ Impact factor 3.8 ] view / link

    4. Zahidur R. Chowdhury and Robert Fedosejevs, “Two photon absorption coefficients and processing parameters for suitable photoresists”, J. of Microsystem and Microtechnolgy, vol. 14(1), pp. 59-67, 2008. view / link

    5. Abdullah. A. Mamun, Zahidur R. Chowdhury, M. A. Azim and M. M. Molla, “MHD-conjugate heat transfer analysis for a vertical flat plate in presence of viscous dissipation and heat generation”, International Communication in Heat and Mass Transfer, vol. 35(10), pp. 1275-1280, 2008. view / link

    6. Abdullah. A. Mamun, Zahidur R. Chowdhury, M. A. Azim, and M. A. Maleque, “Conjugate heat transfer for a vertical flat plate with heat generation effect”, J. of Nonlinear Analysis: Modelling and Control, vol. 13(2), pp. 213–223, 2008. view / link

    7. Zahidur R. Chowdhury, M. A. Naser and Ashraf Bin Islam, “Bengali handwritten numeral recognition using artificial neural network and transition elements”, J. of Institute of Enggineers, Bangladesh, vol. 31, pp. 47-53, 2006. view / link

    8. M. Kamrul Hasan, Zahiudr R. Chowdhury and M. Rizwan khan, “Identification of autoregressive signals in colored noise using damped sinusoidal odel", IEEE Transaction on Circuit and Systems I, vol. 50(7), pp. 966-969, 2003. view / link

    9. Zahidur R Chowdhury and Nazir P Kherani, “Light induced degradation of facile grown native oxide and PECVD silicon nitride passivated crystalline silicon surface passivation quality”. [Manuscript in preparation]

  • Conference presentations/articles

    1. [ Invited ] Nazir P. Kherani, P. Mahtani, and Zahidur R. Chowdhury, “Passivation of the silicon surface: low temperature approaches”, presented in International Conference on Optical, Optoelectronic and Photonic Materials (ICOOPMA), Leeds, England, 2014.

    2. Zahidur R. Chowdhury and Nazir P. Kherani, “Back Amorphous-Crystalline silicon Heterojunction photovoltaic device: A parametric ptudy”, presented in Next Generation Solar and Photovoltaics Canada National Scientific Conference, Montreal, Canada, 2014. view / link

    3. David Barchet, Heidi Potts, Zahidur R. Chowdhury and Nazir P. Kherani, “Low-temperature ozone native oxide based surface passivation of silicon”, presented in Next Generation Solar and Photovoltaics Canada National Scientific Conference, Montreal, Canada, 2014. view / link

    4. Zahidur R. Chowdhury and Nazir P. Kherani, “Facile grown oxide based passivation for silicon heterojunction PV cells”, presented in International Conference on Amorphous and Nanocyrstalline Semiconductor (ICANS), Toronto, Canada, 2013. view / link

    5. [ Invited ] Nazir P. Kherani and Zahidur R. Chowdhury, “Facile native oxide based passivation of silicon: an unconventional approach”, presented in Materials Science & Technology 2013, Montreal, 2013. view / link

    6. [ Invited ] Nazir P. Kherani and Zahidur R. Chowdhury, “Nanometer thick native oxide based passivation of silicon for high efficiency photovoltaics”, presented in International Nanoelectronics Conference (INEC), Singapore, 2013. view / link

    7. Andrew G. Flood, Kevin Boyd, Zahidur R. Chowdhury, Paul G. O'Brien, Rafael Kleiman and Nazir P. Kherani, “Optical characterization of selectively transparent and conducting photonic crystals for use in thin crystalline silicon photovoltaics”, presented in 39th IEEE Photovoltaic Specialist Conference, pp. 1856-1860, Tampa Bay, FL, 2013. view / link

    8. Kevin M. W. Boyd, Kitty Kumar, Eric Janssen, Zahidur R. Chowdhury, Nazir P. Kherani and Rafael Kleiman, “Novel method for fabricating high efficiency 10 micron thick c-Si solar cells”, presented in 39th IEEE Photovoltaic Specialist Conference, pp. 0539-0542, Tampa Bay, FL, 2013. view / link

    9. Zahidur R. Chowdhury, D. Stepanov, Davit Yeghikyan and Nazir P. Kherani, “Excellent low temperature passivation scheme with reduced optical absorption for BACH PV device”, presented in 38th IEEE Photovoltaic Specialist Conference, pp. 001026-001028, Austin, TX, 2012. view / link

    10. D. Stepanov, Zahidur R. Chowdhury and Nazir P. Kherani, “Lowest surface recombination velocity on n-type crystalline silicon using PECVD a-Si:H/SiNx bi-layer passivation”, presented in Photonics North, published in the Proceedings of SPIE, vol. 8007, article no. 800720, Ottawa, Canada, 2011. view / link

    11. Zahidur R. Chowdhury, S. Zukotynski and Nazir P. Kherani, “Modeling of thin back amorphous-crystalline silicon heterojuction (BACH) PV”, presented in European Photovoltaic Solar Energy Conference, Hamburg, Germany, 2011. view / link

    12. A. H. Fischer, M. P. Maier, Zahidur R. Chowdhury, G. Hahn, Nazir P. Kherani, Stefan Zukotynski, “Laser fired emitter on n-type silicon using amorphous silicon passivation“, presented in European Photovoltaic Solar Energy Conference, Valencia, Spain, 2011. view / link

    13. Zahidur R. Chowdhury, A. Chutinan, Adel B. Gougam, Nazir P. Kherani and Stefan Zukotynski, “Two-dimensional modeling of the back amorphous-crystalline silicon heterojunction (BACH) photovoltaic device”, presented in Photonics North, published in the Proceedings of SPIE, vol. 7750, article no. 77502V, Niagara Falls, Canada, 2010. view / link

    14. Zahidur R. Chowdhury, H. Liu, Nazir P. Kherani, and Stefan Zukotynski, “Back Amorphous-Crystalline Silicon Heterojunction (BACH) solar cell modelling study“, presented in Solar Building Research Network, Toronto, Canada, 2009. view / link

    15. M. S. Amin, Ahmed-ur Rahman, Saabah.-B. Mahbub ; Khawza. I. Ahmed, and Zahidur R. Chowdhury, “Estimation of direction of arrival (DOA) using real-time array signal processing”, presented in International conference on Electrical and Computer Engineering, pp. 422 - 427, Dhaka, Bangladesh, 2008. view / link

    16. Abdullah. A. Mamun, Momammad A. Azim , Zahidur R. Chowdhury and Mohammad A. Maleque, “Natural convection flow along a vertical flat plate with conduction and heat generation effect”, presented in International Conference on Mechanical Engineering, Dhaka, Bangladesh, 2007. view / link

    17. Zahidur R. Chowdhury and Robert Fedosejevs, “Sub-micron resolution three dimensional structure writing using two photon absorption process”, presented in Photonics North, published in the Proceedings of SPIE, vol. 6343, article no. 634326, Quebec City, Canada 2006. view / link

    18. M. Kamrul Hasan, Zahidur R. Chowdhury, Rubyet Adnan, M. M. Rahman Bhuiyan, and M. Rezwan Khan, “A new method for parameter estimation of autoregressive signals in colored noise”, presented in 11th European Signal Processing Conference, pp. 173-176, France, 2002. view / link

  • Seminar Presentation

    1. Zahidur R Chowdhury, “A Novel Passivation Scheme for the Next-Generation Low-Cost High-Efficiency Thin Silicon Solar Cells", Electromagnetics-Photonics Seminars at University of Toronto, April 17th, 2014. link

  • Blog

    1. Zahidur R Chowdhury, “The Thinner the Greener" link

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