The innovation engine for new materials

Brenda Ontiveros

Brenda Ontiveros




University of Texas at El Paso


Hayden Evans

Faculty Sponsor(s): 

Ram Seshadri

Faculty Sponsor's Department(s): 

Chemistry and Biochemistry

Project Title: 

Functional Organic-Inorganic Hybrid Materials for Optoelectronic Applications

Project Description: 

Hybrid organic-inorganic lead halide perovskite materials have recently emerged as excellent and cost effective light harvesters in single junction solid-state solar cells. However, though these materials have remarkable performance they also suffer from air sensitivity and degrade within hours.  In order to address this issue, it has been shown that chemically modifying and incorporating simple hydrophobic organic amines into the material’s atomic structure increases air stability. We are currently expanding off of this this strategy by using novel chromophores as our hydrophobic organics to potentially boost photo absorption and efficiency. Due to strong visible light absorption and photostability, we have chosen to explore materials with unsubstituted dipyrrin chromophores. We utilize one-pot solvothermal preparation techniques to access thermodynamically stable single crystal quality materials.  Current work is still on-going but we have so far successfully isolated and characterized one bismuth iodide hybrid material.