Back to Search
Start Over
High brightness formamidinium lead bromide perovskite nanocrystal light emitting devices.
- Source :
- Scientific Reports; 11/11/2016, p36733, 1p
- Publication Year :
- 2016
-
Abstract
- Formamidinium lead halide (FAPbX<subscript>3</subscript>) has attracted greater attention and is more prominent recently in photovoltaic devices due to its broad absorption and higher thermal stability in comparison to more popular methylammonium lead halide MAPbX<subscript>3</subscript>. Herein, a simple and highly reproducible room temperature synthesis of device grade high quality formamidinium lead bromide CH(NH<subscript>2</subscript>)<subscript>2</subscript>PbBr<subscript>3</subscript> (FAPbBr<subscript>3</subscript>) colloidal nanocrystals (NC) having high photoluminescence quantum efficiency (PLQE) of 55-65% is reported. In addition, we demonstrate high brightness perovskite light emitting device (Pe-LED) with these FAPbBr<subscript>3</subscript> perovskite NC thin film using 2,2′,2″-(1,3,5-Benzinetriyl)-tris(1-phenyl-1-H-benzimidazole) commonly known as TPBi and 4,6-Bis(3,5-di(pyridin-3-yl)phenyl)-2-methylpyrimidine (B3PYMPM) as electron transport layers (ETL). The Pe-LED device with B3PYMPM as ETL has bright electroluminescence of up to 2714 cd/m<superscript>2</superscript>, while the Pe-LED device with TPBi as ETL has higher peak luminous efficiency of 6.4 cd/A and peak luminous power efficiency of 5.7 lm/W. To our knowledge this is the first report on high brightness light emitting device based on CH(NH<subscript>2</subscript>)<subscript>2</subscript>PbBr<subscript>3</subscript> widely known as FAPbBr<subscript>3</subscript> nanocrystals in literature. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20452322
- Database :
- Complementary Index
- Journal :
- Scientific Reports
- Publication Type :
- Academic Journal
- Accession number :
- 119431253
- Full Text :
- https://doi.org/10.1038/srep36733