Effects of Redox, Molecular, and Ionic Dopants on the Structure and Electronic Behavior of Haloplumbate Perovskites
Abstract
The Marder group (Georgia Institute of Technology / University of Colorado) and the Snaith group (University of Oxford), along with a number of additional collaborators including Bernard Kippelen and Carlos Silva (Georgia Tech), Norbert Koch (Humboldt University of Berlin), Henk Bolink (Valencia), Oanu Jurchescu (Wake Forest University), Tatiana Timofeeva (New Mexico Highlands University), Nathan Jui (Emory), Ed Sargent (Toronto), Ruth Pachter (AFRL), and Shijun Sun (MIT) have worked together on numerous aspects of relevance to leadhalide perovskite solar cells. These include establishing a method of extrinsically p-doping 3D perovskite materials, providing a potential avenue for highly efficient perovskite photovoltaics with improved long-term stability. Analogous n-doping was less successful. p-Doped polymeric hole-extraction materials for both n-i-p and p-i-n perovskite solar cells have been developed, some of which offer advantages in terms of device stability and/or performance over more well established hole-extraction layers, and various methods for crosslinking these layers have been developed. n-Doped electron-extraction layers for n-i-p cells have also been developed, these being based on benzocyclobutene-functionalized fullerenes that, with or without the addition of oligomers bearing multiple benzocyclobutene moieties, become insolubilized on heating to moderate temperatures. The use of ionic dopants for perovskite cells has also been investigated. A wide range of low-dimensional lead halide perovskites and related materials have also been investigated with a focus on understanding the role of the organic cations structure in determining the crystal structure of the resulting hybrid material. Some of these materials have also been used to protect the active layers of perovskite solar cells.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 31, 2021
- Accession Number
- AD1153176
Entities
People
- Seth Marder
Organizations
- Georgia Tech Research Corporation