Conducting Layered Organic-inorganic Halides Containing <110>-Oriented Perovskite Sheets.


Journal Article

Single crystals of the layered organic-inorganic perovskites, [NH(2)C(I=NH(2)](2)(CH(3)NH(3))m SnmI3m+2, were prepared by an aqueous solution growth technique. In contrast to the recently discovered family, (C(4)H(9)NH(3))(2)(CH(3)NH(3))n-1SnnI3n+1, which consists of (100)-terminated perovskite layers, structure determination reveals an unusual structural class with sets of m <110>-oriented CH(3)NH(3)SnI(3) perovskite sheets separated by iodoformamidinium cations. Whereas the m = 2 compound is semiconducting with a band gap of 0.33 +/- 0.05 electron volt, increasing m leads to more metallic character. The ability to control perovskite sheet orientation through the choice of organic cation demonstrates the flexibility provided by organic-inorganic perovskites and adds an important handle for tailoring and understanding lower dimensional transport in layered perovskites.

Full Text

Duke Authors

Cited Authors

  • Mitzi, DB; Wang, S; Feild, CA; Chess, CA; Guloy, AM

Published Date

  • March 1995

Published In

Volume / Issue

  • 267 / 5203

Start / End Page

  • 1473 - 1476

PubMed ID

  • 17743545

Pubmed Central ID

  • 17743545

Electronic International Standard Serial Number (EISSN)

  • 1095-9203

International Standard Serial Number (ISSN)

  • 0036-8075

Digital Object Identifier (DOI)

  • 10.1126/science.267.5203.1473


  • eng