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Study of surfactant-free lead sulfide nanocrystals-P3HT hybrid polymer solar cells

Organic Electronics, ISSN: 1566-1199, Vol: 22, Page: 44-50
2015
  • 12
    Citations
  • 0
    Usage
  • 19
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    12
    • Citation Indexes
      12
  • Captures
    19

Article Description

Surfactant free nanocrystals (NCs) of lead sulfide (PbS) prepared using Continuous Spray Pyrolysis (CoSP) technique had been dispersed in poly (3-hexylthiophene) (P3HT) and used in hybrid polymer solar cells (HSCs) to study the role of surfactant free NCs in these devices. Absence of surfactant on PbS NCs improves the polymer–NCs interface and is responsible for an efficient electronic interaction between the two materials. FTIR results show a shift in the characteristics band for the blends confirming the proper bonding between the polymer and NCs. Hybrid polymer solar cells with configuration ITO/PEDOT:PSS/P3HT:PbS/Al have been fabricated with different PbS loading. With the increase in PbS NC content, the device efficiency increases first and then decreases, the device having 30 wt% of PbS NCs shows the best performance with an energy conversion efficiency of 1.6%, an open circuit voltage of 0.42 V, a short-circuit current density of 9.90 mA/cm 2, and a fill factor of 0.40 under Air Mass 1.5G illumination with the irradiation of 100 mW/cm 2. Structural and morphological investigations show that better performance is achieved with the optimum amount of PbS NCs due to good distribution and interconnection in the polymer layer.

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