Performance Analysis of PbS Colloidal Quantum Dot Solar Cell at Different Absorption Coefficient

Ankita Sharma; Ravi Shankar Yadav; Bramha P. Pandey

Authors

Ankita Sharma Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur - 273010, U.P., India
Ravi Shankar Yadav Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur - 273010, U.P., India
Bramha P. Pandey Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur - 273010, U.P., India

Keywords:

Absorption coefficient, Open circuit voltage (Voc ), Short-circuit current (J sc ), Fill factor (FF), Quantum efficiency, Power conversion efficiency (PCE)

Abstract

This paper is based on the modelling of absorption model for PbS colloidal quantum dot solar cell using SCAPS. The main objective is to predict the best absorption coefficient (cm-1) for the PbS colloidal quantum dot (CQD) at which the solar cell performance can be improved. In the present work, the modelling and simulation have been performed for the five different absorption model included in CQD layer and obtained different performance parameter such as open-circuit voltage (Voc), short-circuit current (Jsc), fill factor (FF), quantum efficiency (QE) and power conversion efficiency (PCE). The best absorption coefficient (cm-1) is 105 having Voc, Jsc, FF, QE and PCE (quantum efficiency) values are 1.64V, 7.6 mA/cm2, 0.91%, 47.2% and 0.62%respectively. The quantum efficiency significantly changes with the absorption coefficient (cm-1) for the 250nm to 1050nm wavelength range.