Substitutional Growth of Methylammonium Lead Iodide Perovskites in Alcohols
Journal Article
·
· Advanced Energy Materials
- Center for Nanoscale Materials, Nanoscience and Technology Division, Argonne National Laboratory, Lemont IL 60439 USA
- Department of Organic Materials Science, Sandia National Laboratory, Albuquerque NM 87185 USA
- Advanced Photon Source, X-Ray Science Division, Argonne National Laboratory, Lemont IL 60439 USA
- Materials Science Division, Argonne National Laboratory, Lemont IL 60439 USA
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919 South Korea
- Center for Nanoscale Materials, Nanoscience and Technology Division, Argonne National Laboratory, Lemont IL 60439 USA; Institute for Molecular Engineering, University of Chicago, 5640 South Ellis Avenue Chicago IL 60637 USA
Methylammonium lead iodide (MAPbIx) perovskites are organic-inorganic semiconductors that serve as the light-harvesting component in photovoltaic devices. Their long carrier diffusion lengths yield power conversion efficiencies in excess of 22%. Conventional growth techniques apply spin-coated precursors on an oxide or polymer substrate followed by annealing; however, use of toxic solvents and high temperature hinder device stability and performance. Through a nucleophilic substitutional growth of MAPbIx in polar protic alcohols, we show evidence for their substrate- and annealing- free production. These variable-sized crystals (~100 nm-10 µm) are found to be tetragonally single-phased in alcohols, and precipitated as powders that are metallic-lead-free with a negligibly small amount of unreacted PbI2 (<10%). On the basis of this chemical approach, we obtain chemically stable MAPbIx in air up to ~1.5 months with thermal stability at ≤300°C. This method is amendable for large-area deposition, large-scale manufacturing, and ultimately leads to energy-efficient, low-cost, and stable optoelectronics.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division; USDOE Office of Science - Office of Basic Energy Sciences
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1459869
- Journal Information:
- Advanced Energy Materials, Journal Name: Advanced Energy Materials Journal Issue: 5 Vol. 8; ISSN 1614-6832
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
Similar Records
Substitutional Growth of Methylammonium Lead Iodide Perovskites in Alcohols
In situ nucleophilic substitutional growth of methylammonium lead iodide polycrystals.
Journal Article
·
Thu Sep 28 20:00:00 EDT 2017
· Advanced Energy Materials
·
OSTI ID:1427505
In situ nucleophilic substitutional growth of methylammonium lead iodide polycrystals.
Journal Article
·
Sat Dec 31 23:00:00 EST 2016
· Nature Chemistry
·
OSTI ID:1429616