Mitigating Iodine Diffusion by a MoO3-Organic Composite Hole Transport Layer for Stable Perovskite Solar Cells
- Authors
- Hong, Jisu; Xu, Zhaojian; Lungwitz, Dominique; Scott, Jonathan; Johnson, Holly M.; Kim, Yun-Hi; Kahn, Antoine; Rand, Barry P.
- Issue Date
- Nov-2023
- Publisher
- American Chemical Society
- Citation
- ACS Energy Letters, v.8, no.12, pp 4984 - 4992
- Pages
- 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS Energy Letters
- Volume
- 8
- Number
- 12
- Start Page
- 4984
- End Page
- 4992
- URI
- https://scholarworks.gnu.ac.kr/handle/sw.gnu/68832
- DOI
- 10.1021/acsenergylett.3c01873
- ISSN
- 2380-8195
- Abstract
- Halide perovskite solar cells (PSCs) exhibit commercialization potential, but long-term stability still must be addressed. Among various products of perovskite decomposition, iodine species are of considerable concern due to their high vapor pressure and corrosive nature. To address this, a small-molecule hole transport layer (HTL), 4,4′,4″-tris[(3-methylphenyl)phenylamino]triphenylamine (m-MTDATA), is used; mixing it with molybdenum trioxide (MoO3) p-dopes the layer and slows iodine permeation. We demonstrate that m-MTDATA:MoO3 HTLs employed in PSCs improve stability under both thermal and voltage bias stress compared to devices with a conventional doped 2,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-spirobifluorene (spiro-OMeTAD) HTL. © 2023 American Chemical Society.
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