Comparing Device Performance In Perovskite Solar Cells With Varying Digital Alloy Contact Layers
Conference Year
January 2019
Abstract
The aim of this work was to fabricate and optimize a digital alloy electron transport layer (ETL) of ZnO and MgZno for use in perovskite solar cells. The ETL was deposited using pulsed laser deposition (PLD) which allowed for the partial pressure during deposition to be varied as well as the concentration of the oxides. Several combinations of partial pressures and concentration step gradients were tested and compared by examining open circuit voltage, short circuit current density, and power conversion efficiency of devices made with the layers. It was determined that the highest performing device was fabricated by varying the ZnO to MgZnO concentration from 1:0, 1:1, 1:2, 1:4, 0:1, while increasing the pressure from 10mT to 50mT at each of the 5 steps respectively.
Primary Faculty Mentor Name
Matthew White
Faculty/Staff Collaborators
Ekraj Dahal, Bin Du, Benjamin Isenhart
Status
Undergraduate
Student College
College of Arts and Sciences
Program/Major
Physics
Primary Research Category
Engineering & Physical Sciences
Comparing Device Performance In Perovskite Solar Cells With Varying Digital Alloy Contact Layers
The aim of this work was to fabricate and optimize a digital alloy electron transport layer (ETL) of ZnO and MgZno for use in perovskite solar cells. The ETL was deposited using pulsed laser deposition (PLD) which allowed for the partial pressure during deposition to be varied as well as the concentration of the oxides. Several combinations of partial pressures and concentration step gradients were tested and compared by examining open circuit voltage, short circuit current density, and power conversion efficiency of devices made with the layers. It was determined that the highest performing device was fabricated by varying the ZnO to MgZnO concentration from 1:0, 1:1, 1:2, 1:4, 0:1, while increasing the pressure from 10mT to 50mT at each of the 5 steps respectively.