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Effect of composition ratio and illumination intensity on the internal parameters of ITO/PEDOT:PSS/ MEHPPV: PCBM/Al polymer photovoltaics

FAHRU NUROSYID1,2,* , RISA SURYANA2, VISKA INDA VARIANI3, KUWAT TRIYANA1, YUSRIL YUSUF1, KAMSUL ABRAHA1

Affiliation

  1. Department of Physics, Gadjah Mada University, Yogyakarta 55281, Indonesia
  2. Department of Physics, Sebelas Maret University, Surakarta 57126, Indonesia
  3. Department of Physics, Haluoleo University, Kendari, 93232, Indonesia

Abstract

A comprehensive study of internal parameters of organic polymer solar cells is necessary to be carried out. This study aims to improve the power conversion efficiency (PCE) significantly. The analysis was made by fitting the current density - voltage (J-V) obtained from experiment and modeling. The experiment used material of MEH-PPV blended with PCBM with variation of composition. This modeling was made using a single diode with Linear Approximation Near Break-down Voltage. The modeling determines the parameters of diode ideality factor (n), photocurrent density (Jph), diode saturation current (Js), parallel resistance (Rp), and serial resistance (Rs). It was conducted by applying the best fitting to the experimental results. The efficiency of MEH-PPV: PCBM blended with ratio 1: 2 was 0.039 % and it was higher than the efficiency of 1: 1 and 1: 4 ratios was 0.001 % and 0.005 %, respectively. The modeling indicated that the addition of PCBM will decrease series resistance; in other words, the electron transport barriers in solar cells decreased. The results of the modeling also showed that the increase in the intensity of the illumination affected the photocurrent density increases (Jph) and saturation current density (Js). Series resistance (Rs) and parallel resistance (Rp) decreased as the light intensity increased..

Keywords

MEH-PPV, PCBM, Solar cell, Internal parameters.

Submitted at: Nov. 6, 2013
Accepted at: July 10, 2014

Citation

FAHRU NUROSYID, RISA SURYANA, VISKA INDA VARIANI, KUWAT TRIYANA, YUSRIL YUSUF, KAMSUL ABRAHA, Effect of composition ratio and illumination intensity on the internal parameters of ITO/PEDOT:PSS/ MEHPPV: PCBM/Al polymer photovoltaics, Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 7-8, pp. 951-955 (2014)