- 专利标题: PEROVSKITE LIGHT EMITTING DEVICE CONTAINING EXCITON BUFFER LAYER AND METHOD FOR MANUFACTURING SAME
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申请号: US16382094申请日: 2019-04-11
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公开(公告)号: US20190237693A1公开(公告)日: 2019-08-01
- 发明人: Tae-Woo LEE , Sanghyuk IM , Himchan CHO , Younghoon KIM
- 申请人: POSTECH ACADEMY-INDUSTRY FOUNDATION
- 优先权: KR10-2014-0153969 20141106; KR10-2015-0156177 20151106
- 主分类号: H01L51/50
- IPC分类号: H01L51/50 ; H01B1/12 ; C09D127/18 ; H01L51/00 ; H01G9/20 ; C09K11/06
摘要:
Provided are a perovskite light emitting device containing an exciton buffer layer, and a method for manufacturing the same. The light emitting device of the present invention comprises: an exciton buffer layer in which a first electrode, a conductive layer disposed on the first electrode and comprising a conductive material, and a surface buffer layer containing fluorine-based material having lower surface energy than the conductive material are sequentially deposited; a light-emitting layer disposed on the exciton buffer layer and containing a perovskite light-emitter; and a second electrode disposed on the light-emitting layer. Accordingly, a perovskite is formed with a combined FCC and BSS crystal structure in a nanoparticle light-emitter. The present invention can also form a lamellar or layered structure in which an organic plane and an inorganic plane are alternatively deposited; and an exciton can be bound by the inorganic plane, thereby being capable of expressing high color purity.