Mitigating Iodine Diffusion by a MoO3–Organic Composite Hole Transport Layer for Stable Perovskite Solar Cells
Journal Article
·
· ACS Energy Letters
- Princeton University, NJ (United States); Gyeongsang National University, Jinju (Korea, Republic of); Princeton University
- Princeton University, NJ (United States)
- Gyeongsang National University, Jinju (Korea, Republic of)
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. Furthermore, 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.
- Research Organization:
- Princeton University, NJ (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0012458
- OSTI ID:
- 2345689
- Journal Information:
- ACS Energy Letters, Journal Name: ACS Energy Letters Journal Issue: 12 Vol. 8; ISSN 2380-8195
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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