Your browser does not support JavaScript!
http://iet.metastore.ingenta.com
1887

access icon free Effect of rapid thermal annealing on InAs/GaAs quantum dot solar cells

The effect of post-growth annealing on InAs/GaAs quantum dot solar cells (QDSCs) is studied. A significant improvement in photoemission, photocurrent density and spectral response was observed with post-growth annealing. The optimal anneal temperature was found to be 700°C, which lead to an 18% improvement in current density from 4.9 mA cm−2 for as-grown sample to 5.8 mA cm−2. We assign this enhanced performance to the reduced density of inherent point defects that was formed at the quantum dot (QD) and GaAs barrier. Post-growth thermal annealing of QDSCs is demonstrated as a simple route for achieving improved device performance.

References

    1. 1)
    2. 2)
    3. 3)
    4. 4)
    5. 5)
    6. 6)
    7. 7)
      • 25. Fu, L., Kuffner, P., McKerracher, I., et al: ‘Rapid thermal annealing study of InGaAs/GaAs quantum dot infrared photodetectors grown by metal-organic chemical vapor deposition’. Lasers and Electro-Optics Society, 2005. The 18th Annual Meeting of the IEEE, October 2005, pp. 228229.
    8. 8)
    9. 9)
    10. 10)
    11. 11)
    12. 12)
    13. 13)
      • 23. Guo-Zhi, J., Jiang-hong, Y., Yong-chun, S., et al: ‘Evolution of InAs quantum dots during annealing process’, Acta Phys. Pol., 2008, 114, (4), pp. 919923.
    14. 14)
    15. 15)
    16. 16)
    17. 17)
    18. 18)
    19. 19)
    20. 20)
    21. 21)
      • 26. Stewart, K., Buda, M., Fu, L., et al: ‘Strain relaxation in rapid thermally annealed InAs/GaAs quantum dot infrared photodetectors’. Conf. of IEEE, Optoelectronic and Microelectronic Materials and Devices, December 2002, pp. 475478.
    22. 22)
    23. 23)
    24. 24)
    25. 25)
    26. 26)
    27. 27)
    28. 28)
    29. 29)
    30. 30)
    31. 31)
    32. 32)
http://iet.metastore.ingenta.com/content/journals/10.1049/iet-opt.2014.0079
Loading

Related content

content/journals/10.1049/iet-opt.2014.0079
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
This is a required field
Please enter a valid email address