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Kim, Jin Young
Next Generation Energy Laboratory
Research Interests
  • Polymer solar cells, QD solar cells, organic-inorganic hybrid solar cells, perovskite solar cells, OLEDs, PeLEDs, organic FETs

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The introduction of a perovskite seed layer for high performance perovskite solar cells

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Title
The introduction of a perovskite seed layer for high performance perovskite solar cells
Author
Jeong, JaekiKim, Hak-BeomYoon, Yung JinAn, Na GyeongSong, SeyeongKim, Jae WonKim, MinjinJang, HyungsuKim, Dong SukKim, Gi-HwanKim, Jin Young
Issue Date
2018-11
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY A, v.6, no.41, pp.20138 - 20144
Abstract
Processing for obtaining compact and uniform perovskite photoactive layers has been intensively studied over the last few years to achieve high power conversion efficiencies (PCEs) in solar cells. Particularly, high quality crystal growth of perovskite layers is critical to enhance device performance. We demonstrate an easy and effective new process for high efficiency p-i-n planar heterojunction structures of perovskite solar cells (PeSCs) by using a compact seed perovskite layer (CSPL). The CSPL assists vertical growth of perovskite crystals and obtains the highly crystalline perovskite photoactive layer, which leads to the reduction in the charge transfer resistance and a longer photoluminescence lifetime. The PeSC device with a CSPL shows a remarkably improved PCE, from 15.07% to 19.25%, with a record open circuit voltage (V-OC) of 1.16 V in the p-i-n structure with pure crystal perovskite and negligible current density-voltage hysteresis. Additionally, a PCE of 20.37% was achieved in CSPL assisted n-i-p structure PeSCs.
URI
https://scholarworks.unist.ac.kr/handle/201301/25141
URL
https://pubs.rsc.org/en/Content/ArticleLanding/2018/TA/C8TA07617K#!divAbstract
DOI
10.1039/c8ta07617k
ISSN
2050-7488
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