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Title: N and p-type properties in organo-metal halide perovskites studied by Seebeck effects

Authors:
; ; ; ; ; ORCiD logo; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1323982
Grant/Contract Number:
CNMS2012-106; CNMS2012-107; CNMS-2012-108
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Organic Electronics
Additional Journal Information:
Journal Volume: 35; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-10-08 21:38:05; Journal ID: ISSN 1566-1199
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English

Citation Formats

Liu, Qing, Hsiao, Yu-Che, Ahmadi, Mahshid, Wu, Ting, Liu, Li, Haacke, Stefan, Wang, Hsin, and Hu, Bin. N and p-type properties in organo-metal halide perovskites studied by Seebeck effects. Netherlands: N. p., 2016. Web. doi:10.1016/j.orgel.2016.05.025.
Liu, Qing, Hsiao, Yu-Che, Ahmadi, Mahshid, Wu, Ting, Liu, Li, Haacke, Stefan, Wang, Hsin, & Hu, Bin. N and p-type properties in organo-metal halide perovskites studied by Seebeck effects. Netherlands. doi:10.1016/j.orgel.2016.05.025.
Liu, Qing, Hsiao, Yu-Che, Ahmadi, Mahshid, Wu, Ting, Liu, Li, Haacke, Stefan, Wang, Hsin, and Hu, Bin. 2016. "N and p-type properties in organo-metal halide perovskites studied by Seebeck effects". Netherlands. doi:10.1016/j.orgel.2016.05.025.
@article{osti_1323982,
title = {N and p-type properties in organo-metal halide perovskites studied by Seebeck effects},
author = {Liu, Qing and Hsiao, Yu-Che and Ahmadi, Mahshid and Wu, Ting and Liu, Li and Haacke, Stefan and Wang, Hsin and Hu, Bin},
abstractNote = {},
doi = {10.1016/j.orgel.2016.05.025},
journal = {Organic Electronics},
number = C,
volume = 35,
place = {Netherlands},
year = 2016,
month = 8
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.orgel.2016.05.025

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  • Here, a new chapter in the long and distinguished history of perovskites is being written with the breakthrough success of metal halide perovskites (MHPs) as solution-processed photovoltaic (PV) absorbers. The current surge in MHP research has largely arisen out of their rapid progress in PV devices; however, these materials are potentially suitable for a diverse array of optoelectronic applications. Like oxide perovskites, MHPs have ABX 3 stoichiometry, where A and B are cations and X is a halide anion. Here, the underlying physical and photophysical properties of inorganic (A = inorganic) and hybrid organic-inorganic (A = organic) MHPs are reviewedmore » with an eye toward their potential application in emerging optoelectronic technologies. Significant attention is given to the prototypical compound methylammonium lead iodide (CH 3NH 3PbI 3) due to the preponderance of experimental and theoretical studies surrounding this material. We also discuss other salient MHP systems, including 2- dimensional compounds, where relevant. More specifically, this review is a critical account of the interrelation between MHP electronic structure, absorption, emission, carrier dynamics and transport, and other relevant photophysical processes that have propelled these materials to the forefront of modern optoelectronics research.« less
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  • Here, a new chapter in the long and distinguished history of perovskites is being written with the breakthrough success of metal halide perovskites (MHPs) as solution-processed photovoltaic (PV) absorbers. The current surge in MHP research has largely arisen out of their rapid progress in PV devices; however, these materials are potentially suitable for a diverse array of optoelectronic applications. Like oxide perovskites, MHPs have ABX 3 stoichiometry, where A and B are cations and X is a halide anion. Here, the underlying physical and photophysical properties of inorganic (A = inorganic) and hybrid organic-inorganic (A = organic) MHPs are reviewedmore » with an eye toward their potential application in emerging optoelectronic technologies. Significant attention is given to the prototypical compound methylammonium lead iodide (CH 3NH 3PbI 3) due to the preponderance of experimental and theoretical studies surrounding this material. We also discuss other salient MHP systems, including 2- dimensional compounds, where relevant. More specifically, this review is a critical account of the interrelation between MHP electronic structure, absorption, emission, carrier dynamics and transport, and other relevant photophysical processes that have propelled these materials to the forefront of modern optoelectronics research.« less
  • Here, we report the first high-pressure single-crystal structures of hybrid perovskites. The crystalline semiconductors (MA)PbX 3 (MA = CH 3NH 3 +, X = Br or I ) afford us the rare opportunity of understanding how compression modulates their structures and thereby their optoelectronic properties. Using atomic coordinates obtained from high-pressure single-crystal X-ray diffraction we track the perovskites’ precise structural evolution upon compression. These structural changes correlate well with pressure-dependent single-crystal photoluminescence (PL) spectra and high-pressure bandgaps derived from density functional theory. We further observe dramatic piezochromism where the solids become lighter in color and then transition to opaquemore » black with compression. Indeed, electronic conductivity measurements of (MA)PbI 3 obtained within a diamond-anvil cell show that the material’s resistivity decreases by 3 orders of magnitude between 0 and 51 GPa. The activation energy for conduction at 51 GPa is only 13.2(3) meV, suggesting that the perovskite is approaching a metallic state. Furthermore, the pressure response of mixed-halide perovskites shows new luminescent states that emerge at elevated pressures. We recently reported that the perovskites (MA)Pb(Br xI 1–x) 3 (0.2 < x < 1) reversibly form light-induced trap states, which pin their PL to a low energy. This may explain the low voltages obtained from solar cells employing these absorbers. Our high-pressure PL data indicate that compression can mitigate this PL redshift and may afford higher steady-state voltages from these absorbers. These studies show that pressure can significantly alter the transport and thermodynamic properties of these technologically important semiconductors.« less
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