Primary Faculty Mentor Name

Matthew White

Project 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

Presentation Title

Comparing Device Performance In Perovskite Solar Cells With Varying Digital Alloy Contact Layers

Time

1:00 PM

Location

Silver Maple Ballroom - Engineering & Physical Sciences

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.

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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.