• BACH PV solar cells

  • Facile native oxide-based passivation of crystalline silicon surfaces was integrated within the Back Amorphous-Crystalline silicon Heterojunction (BACH) solar cell concept. The new passivation scheme consists of 1-nm thick native oxide and nomin ... Read More
  • BACH cell performance

  • LIT PV solar cells

  • A novel cell concept is proposed that uses the recently reported high quality facile native oxide based passivation scheme for crystalline silicon surfaces. Maximum cell efficiency of 13.6% has been achieved for the Lateral Inherently Thin (LIT) ... Read More

  • Crystalline silicon surface passivation

  • High quality surface passivation of crystalline silicon has been attained using facile native oxide and plasma enhanced chemical vapour deposition SiNx. Using systematic measurements of excess carrier density dependent minority carrier lifetime, it is o ... Read More
  • crystalline silicon surface passivation

  • RIE textured black silicon

  • A novel texturization process has been developed to produce black silicon (silicon surface with very low reflectivity). Inverted pyramid textured surface and very rough surface can be produced by controlling the plasma process parameter. Reflectivity le ... Read More
  • Black silicon surface and its reflectivity

  • Silicon texturization with low surface damage

  • Low surface defect density of the textured crystalline silicon has been attained with appropriate wet chemical processing. The passivation quality was poor after the texturiation steps resulting less than 10 μs minority carrier lifetime with hydro ... Read More
  • Silicon texturization with low surface damage

  • Ultra-thin silicon PV solar cells

  • The light trapping mechanisms to mitigate reduction in absorption and improved passivation for the 10 μm thick silicon wafers were investigated in this study. A novel method to fabricate a high efficiency solar cell on a 10 μm thick silicon membrane ... Read More
  • Ultra-thin silicon PV solar cells

  • PV solar cell simulation

  • Two dimensional modeling study of theBACH cell,LIT cell and Laser Fired Emitter (LFE) concept were carried out using Sentaurus. A parametric study of these cell concepts has been reported after having the benchmarked the simulation process. So ... Read More
  • PV solar cell simulation

  • 3D laser writing

  • Three-dimensional (3D) microstructure writing using the two photon absorption (TPA) process has potential applications in the fabrication of photonic crystals and micromechanical devices. Ormocore and SU-8, two commercially available photor ... Read More
  • 3D laser writing

  • Digital system identification

  • A new method was proposed for autoregressive (AR) parameter estimation from colored noise-corrupted observations using a damped sinusoidal model for autocorrelation function of the noise-free signal. The damped sinusoidal model paramet ... Read More
  • Digital system identification

  • Bengali hand-writing recognition

  • Bengali hand-writing recognition has potential application in document processing for one of the widely used language in the world. A method using Artificial Neural Network (ANN) is utilized primarily to identify numerals of the language using transitio ... Read More
  • Bengali hand-writing recognition

  • Thermo-fluid-dynamic simulation

  • The effects of magnetic field, viscous dissipation and heat generation on natural convection flow of an incompressible, viscous and electrically conducting fluid along a vertical flat plate in the presence of conduction were investigated. Numerical sol ... Read More
  • Thermo-fluid-dynamic simulation

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