Title

Epitaxial Methylammonium Lead Iodide Perovskites for Inexpensive and Efficient Solar Harvesting

Presenter Information

Ashley Demster

Department

Chemistry

Major

Chemistry

Research Advisor

Switzer, Jay A., 1950-

Advisor's Department

Chemistry

Funding Source

Missouri S&T Opportunity for Undergraduate Research Experiences (OURE) Program; U. S. Department of Energy Grant DE-FG02-08ER46518; National Science Foundation Grant DMR-1104801

Abstract

Our planet’s ever-increasing energy consumption drives a search for inexpensive and efficient renewable energy sources, and the sun could be the answer. Emerging inorganic-organic solar cell technology utilizing methylammonium metal halides with the perovskite structure experienced five-fold increase in power conversion efficiency since its introduction, from 3.8 % in 2009 to 20.1 % in 2014. These solar cells show potential to greatly cut costs of solar energy harvesting: however epitaxial films remain unexplored.

I will present a novel method to electrochemically synthesize epitaxial CH3NH3PbI3 films with the perovskite structure. Epitaxial PbO2 is converted to epitaxial CH3NH3PbI3 perovskite of tunable morphology and crystal orientation by simple dip conversion. Solar cells constructed with epitaxial CH3NH3PbI3 should exhibit increased efficiencies because the density of bulk and interface defects is minimized. This method could be integrated into cells to provide a clean and more cost-effective alternative to traditional silicon single crystal technology.

Biography

Ashley is a junior in the chemistry department from Springfield, Missouri. She is a member of the American Chemical Society and works as a research assistant in the Materials Research Center. Upon graduation in May 2016, she plans to enroll in graduate studies to continue her education in chemistry.

Research Category

Sciences

Presentation Type

Oral Presentation

Document Type

Presentation

Award

Sciences oral presentation, First place

Location

Gasconade Room

Presentation Date

15 Apr 2015, 9:00 am - 9:30 am

This document is currently not available here.

Share

COinS
 
Apr 15th, 9:00 AM Apr 15th, 9:30 AM

Epitaxial Methylammonium Lead Iodide Perovskites for Inexpensive and Efficient Solar Harvesting

Gasconade Room

Our planet’s ever-increasing energy consumption drives a search for inexpensive and efficient renewable energy sources, and the sun could be the answer. Emerging inorganic-organic solar cell technology utilizing methylammonium metal halides with the perovskite structure experienced five-fold increase in power conversion efficiency since its introduction, from 3.8 % in 2009 to 20.1 % in 2014. These solar cells show potential to greatly cut costs of solar energy harvesting: however epitaxial films remain unexplored.

I will present a novel method to electrochemically synthesize epitaxial CH3NH3PbI3 films with the perovskite structure. Epitaxial PbO2 is converted to epitaxial CH3NH3PbI3 perovskite of tunable morphology and crystal orientation by simple dip conversion. Solar cells constructed with epitaxial CH3NH3PbI3 should exhibit increased efficiencies because the density of bulk and interface defects is minimized. This method could be integrated into cells to provide a clean and more cost-effective alternative to traditional silicon single crystal technology.