Effects of thermal treatment on organic-inorganic hybrid perovskite films and luminous efficiency of light-emitting diodes
- Authors
- Kim, Young Hoon; Cho, Himchan; Heo, Jin Hyuck; Im, Sang Hyuk; Lee, Tae-Woo
- Issue Date
- Sep-2016
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Thermal treatment; Crystallinity; Organic-inorganic perovskite; Light-emitting diodes; Luminous efficiency
- Citation
- CURRENT APPLIED PHYSICS, v.16, no.9, pp 1069 - 1074
- Pages
- 6
- Indexed
- SCI
SCIE
SCOPUS
KCI
- Journal Title
- CURRENT APPLIED PHYSICS
- Volume
- 16
- Number
- 9
- Start Page
- 1069
- End Page
- 1074
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/194395
- DOI
- 10.1016/j.cap.2016.06.002
- ISSN
- 1567-1739
1878-1675
- Abstract
- To improve the electroluminescence efficiency of organic-inorganic hybrid perovskite (OIP) films, we need to consider several different types of post-treatments after film formation such as thermal annealing and solvent annealing. Here, we only applied thermal treatment on the film excluding all the other treatments. Then, we analyzed the effects of annealing time t(ann) on crystallinity of methylammonium lead bromide (CH3NH3PbBr3) films and on luminous efficiency of CH3NH3PbBr3-based perovskite light-emitting diodes (PrLEDs). When thermal annealing of CH3NH3PbBr3 films was conducted at 90 degrees C, t(ann) <= 10 min increased its crystallinity by eliminating residual solvent and completing the conversion of precursor to crystal, but t(ann) > 10 min reduced crystallinity and caused slight sublimation of CH3NH3Br. This was consistent with trend of the luminous efficiency of our PrLEDs that showed the optimum performance at t(ann) = 10 min. These results demonstrate that optimizing tann of CH3NH3PbBr3 films is a simple way to improve the luminous efficiency of PrLEDs by controlling their crystallinity.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 에너지공학과 > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.