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Textured window with DLAR coating design for an effective minimization of electrical and optical losses in an efficient III–V solar cell

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Abstract

Performances of solar cells with different window materials and structures have been analysed and compared. Four different materials with varied thickness have been used for comparison. An efficient thin textured window layer design with double layer anti reflection coating for III–V solar cell is then proposed. The optimum window is obtained with 18 nm InAlP material and further optimized with four sided textured surface coated with 125 nm double antireflective layer of \(\hbox {Al}_{2}\hbox {O}_{3}\)–\(\hbox {TiO}_{2}\). Our design shows minimum reflection and absorption loss in the wavelength range of 200–650 nm and better transmission for rest of the higher wavelength when illuminated with AM1.5G spectrum. Performance variation with different doping concentration on this layer is also investigated. At about \(1\times 10^{17}\) \(\hbox {cm}^{-3}\) carrier concentration, EQE of the cell is found to be well above 95 %. The model has been validated with experimental data available from various recent literatures.

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Authors and Affiliations

  1. Department of Electronics and Communication Engineering, Manipur Institute of Technology, Imphal, 795004, India

    Khomdram Jolson Singh & N. Basanta Singh

  2. Department of Electronics and Telecommunication Engineering, Jadavpur University, Kolkata, 700032, India

    Subir Kumar Sarkar

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  1. Khomdram Jolson Singh
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  2. N. Basanta Singh
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  3. Subir Kumar Sarkar
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Correspondence to Khomdram Jolson Singh.

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Singh, K.J., Singh, N.B. & Sarkar, S.K. Textured window with DLAR coating design for an effective minimization of electrical and optical losses in an efficient III–V solar cell. J Comput Electron 14, 288–299 (2015). https://doi.org/10.1007/s10825-014-0652-2

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  • DOI: https://doi.org/10.1007/s10825-014-0652-2

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