Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2017 Aug 30;3(8):e1701293. doi: 10.1126/sciadv.1701293

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.

PMC Copyright notice

Fig. 1 — (A) Unit cell and crystal structure of {en}FASnI₃ perovskite absorber. (B) pXRD patterns, (C) ¹H NMR, (D) TGA data, (E) optical absorption, and (F) photoluminescence (PL) spectra of the {en}FASnI₃ perovskite crystals with various molar ratios of FA and en. a.u., arbitrary unit. (G) A 2 × 2 × 2 supercell of (FA)₂Sn₂I₆ depicting a model of the hollow perovskite with two SnI₂ vacancies [(FA)₁₆Sn₁₄I₄₄]. The calculated band structures of the supercell for the full [(FA)₁₆Sn₁₆I₄₈] and hollow [(FA)₁₆Sn₁₄I₄₄] perovskites are shown in (H) and (I), respectively. (I) Inset: Plot of the increase in the bandgap and decrease of the bandwidth as a function of SnI₂ vacancies in FASnI₃.