Two-dimensional organic tin Halide Perovskites with tunable visible emission and their use in light-emitting devices
File(s)
Supporting information
Author(s)
Lanzetta Lopez, L
Marin-Beloqui, JM
Sanchez-Molina, I
Ding, D
Haque, SA
Type
Journal Article
Abstract
Hybrid organic lead trihalide perovskites continue to generate significant interest for use in optoelectronic devices such as solar cells and light-emitting devices. However, the toxicity of lead is considered one of the main obstacles to the commercialization of this technology. Although challenging, the replacement of lead by tin is currently the most promising alternative. Herein, we explore a class of low-dimensional, lead-free perovskite materials (2D (PEA)2SnIxBr4–x, where PEA ≡ C6H5CH2CH2NH3+) with tunable optical properties in the visible region of the spectrum. Specifically, we show that 2D (PEA)2SnI4 perovskite exhibits superior photoluminescence properties to conventional 3D CH3NH3SnI3 and that (PEA)2SnI4 can act as a sensitizer on mesoporous TiO2. We go on to demonstrate visible (∼630 nm) electroluminescence from a device employing a (PEA)2SnI4 emitter sandwiched between ITO/PEDOT:PSS and F8/LiF/Al as hole and electron injection electrodes, respectively. These devices reach a luminance of 0.15 cd/m2 at 4.7 mA/cm2 and an efficacy of 0.029 cd/A at 3.6 V. This proof-of-principle device indicates a viable path to low-dimensional, lead-free perovskite optoelectronics.
Date Issued
2017-06-27
Date Acceptance
2017-06-20
Citation
ACS Energy Letters, 2017, 2 (7), pp.1662-1668
ISSN
2380-8195
Publisher
American Chemical Society
Start Page
1662
End Page
1668
Journal / Book Title
ACS Energy Letters
Volume
2
Issue
7
Copyright Statement
© 2017 American Chemical Society.
Subjects
Science & Technology
Physical Sciences
Technology
Chemistry, Physical
Electrochemistry
Energy & Fuels
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Chemistry
Science & Technology - Other Topics
Materials Science
FIELD-EFFECT TRANSISTORS
SOLAR-CELLS
LAYERED-PEROVSKITE
OPTICAL-PROPERTIES
DIODES
ELECTROLUMINESCENCE
SEMICONDUCTOR
CH3NH3SNI3
TRANSITIONS
EFFICIENCY
Publication Status
Published