Mitigating Iodine Diffusion by a MoO3–Organic Composite Hole Transport Layer for Stable Perovskite Solar Cells

Hong, Jisu; Xu, Zhaojian; Lungwitz, Dominique; Scott, Jonathan; Johnson, Holly M.; Kim, Yun-Hi; Kahn, Antoine; Rand, Barry P.

doi:10.1021/acsenergylett.3c01873

Title: Mitigating Iodine Diffusion by a MoO₃–Organic Composite Hole Transport Layer for Stable Perovskite Solar Cells

Journal Article · 02 November 2023 · ACS Energy Letters

DOI: https://doi.org/10.1021/acsenergylett.3c01873 · OSTI ID:2345689

Hong, Jisu ^[1];

^[2];

^[2]; Scott, Jonathan ^[2]; Johnson, Holly M. ^[2];

^[3];

^[2];

^[2]

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.

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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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14 SOLAR ENERGY
Doping
Electrical conductivity
Electrodes
Gold
Iodine

Title: Mitigating Iodine Diffusion by a MoO3–Organic Composite Hole Transport Layer for Stable Perovskite Solar Cells

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Title: Mitigating Iodine Diffusion by a MoO₃–Organic Composite Hole Transport Layer for Stable Perovskite Solar Cells