Enhancing Performance of Methyl-benzoate-PSK based Cells through device simulations
Aniket Verma, Nikhil Shrivastav, Jaya Madan
Abstract
The research work focuses on the exploration of a SnO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> /Methyl-benzoate-PSK/Spiro-OMeTAD solar cell by varying the thickness and defect density of its absorber layer. The simulations have been conducted using the Solar Cell Capacitance Simulator (SCAPS-1D) software. The device structure is based on previous work, with SnO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> as the electron transport layer (ETL), Spiro-OMeTAD as the hole transport layer (HTL), and Methyl-benzoate-PSK (MB-PSK) as the absorber layer. The goal is to enhance photon absorption from sunlight. The study examined the impact of varying absorber layer thickness from 100 to 1000 nm on the device's performance. Defect density variations, ranging from 1 x 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">10</sup> to 1 x 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">15</sup> cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-2</sup> , are also studied. The JV curves indicated that higher defect density led to decreased VOC while current density remained relatively constant. The EQE curve, however, remained consistent regardless of defect density. The obtained optimized PV parameters of the MB-PSK based cells are - FF: 84.87%, PCE: 23.21 %, V <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">OC</inf> : 1.31 V, and J <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">SC</inf> : 20.86mA/cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> .