Nano Express

Nanoscale Research Letters

, Volume 4, Issue 7, pp 674-679

Open Access This content is freely available online to anyone, anywhere at any time.

Effect of ZnCdTe-Alloyed Nanocrystals on Polymer–Fullerene Bulk Heterojunction Solar Cells

  • Yan WangAffiliated withKey Laboratory of Luminescence and Optical Information, Ministry of Education Institute of Optoelectronic Technology, Beijing Jiaotong University
  • , Yanbing HouAffiliated withKey Laboratory of Luminescence and Optical Information, Ministry of Education Institute of Optoelectronic Technology, Beijing Jiaotong University Email author 
  • , Aiwei TangAffiliated withKey Laboratory of Luminescence and Optical Information, Ministry of Education Institute of Optoelectronic Technology, Beijing Jiaotong University
  • , Zhihui FengAffiliated withKey Laboratory of Luminescence and Optical Information, Ministry of Education Institute of Optoelectronic Technology, Beijing Jiaotong University
  • , Bin FengAffiliated withKey Laboratory of Luminescence and Optical Information, Ministry of Education Institute of Optoelectronic Technology, Beijing Jiaotong University
  • , Yan LiAffiliated withKey Laboratory of Luminescence and Optical Information, Ministry of Education Institute of Optoelectronic Technology, Beijing Jiaotong University
  • , Feng TengAffiliated withKey Laboratory of Luminescence and Optical Information, Ministry of Education Institute of Optoelectronic Technology, Beijing Jiaotong University

Abstract

The photovoltaic properties of solar cell based on the blends of poly[2-methoxy-5-(2-ethylhexoxy-1,4-phenylenevinylene) (MEH-PPV), fullerene (C60), and ZnCdTe-alloyed nanocrystals were investigated. Comparing the spectral response of photocurrent of the MEH-PPV:C60 (+ZnCdTe) nanocomposite device with that of the devices based on MEH-PPV:C60 and pristine MEH-PPV, one can find that the nanocomposite device exhibits an enhanced photocurrent. In comparing the composite devices with different ZnCdTe:[MEH-PPV + C60] weight ratios of 10 wt% (D1–1), 20 wt% (D1–2), 40 wt% (D1–3), and 70 wt% (D1–4), it was found that the device D1–3 exhibits the best performance. The power conversion efficiency (η) is improved doubly compared with that of the MEH-PPV:C60 device.

Keywords

ZnCdTe Alloy Nanocrystals Heterojuction Solar cell