Myths and reality of HPbI3 in halide perovskite solar cells

Ke, Weijun; Spanopoulos, Ioannis; Stoumpos, Constantinos C.; Kanatzidis, Mercouri G.

doi:10.1038/s41467-018-07204-y

Title: Myths and reality of HPbI₃ in halide perovskite solar cells

Journal Article · Wed Nov 14 00:00:00 EST 2018 · Nature Communications

DOI:https://doi.org/10.1038/s41467-018-07204-y· OSTI ID:1566604

Ke, Weijun ^[1];

^[1];

^[1]; Kanatzidis, Mercouri G. ^[1]

Northwestern Univ., Evanston, IL (United States)

All-inorganic perovskites have a special place in halide perovskite family because of their potential for better stability. However, the representative cesium lead iodide (CsPbI₃) is metastable and spontaneously converts to the non-perovskite structure at room temperature. Here, we demonstrate that what appears to be all-inorganic CsPbI₃ stabilized in its perovskite form using the purported intermediate known as hydrogen lead iodide (HPbI₃) is, in fact, the hybrid perovskite cesium dimethylammonium lead iodide (Cs_1-xDMA_xPbI₃, x = 0.2 to 0.5). Thus, many of the reported all-inorganic perovskites are actually still hybrid organic-inorganic perovskites, as strongly evidenced by a wide battery of experimental techniques presented here. Solar cells based on the representative composition Cs_0.7DMA_0.3PbI₃ can achieve an average power conversion efficiency of 9.27 ± 1.28% (max 12.62%). These results provide an alternative angle to look at previous results pertaining all-inorganic CsPbI₃ while the DMA cation is now revealed as an alternative A site cation.

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Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Center for Light Energy Activated Redox Processes (LEAP); Northwestern Univ., Evanston, IL (United States); Univ. of California, Santa Barbara, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)

Grant/Contract Number:: SC0001059; SC0012541

OSTI ID:: 1566604

Journal Information:: Nature Communications, Vol. 9, Issue 1; ISSN 2041-1723

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 184 works

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Polyethyleneimine-functionalized carbon nanotubes as an interlayer to bridge perovskite/carbon for all inorganic carbon-based perovskite solar cells Yang, Yinglong; Chen, Haining; Hu, Chen Journal of Materials Chemistry A, Vol. 7, Issue 38 https://doi.org/10.1039/c9ta08177a	journal	January 2019
Enhanced air-stability of Sn-based hybrid perovskites induced by dimethylammonium (DMA): synthesis, characterization, aging and hydrogen photogeneration of the MA _1−x DMA _x SnBr ₃ system Pisanu, Ambra; Speltini, Andrea; Quadrelli, Paolo Journal of Materials Chemistry C, Vol. 7, Issue 23 https://doi.org/10.1039/c9tc01743g	journal	January 2019
Skillfully deflecting the question: a small amount of piperazine-1,4-diium iodide radically enhances the thermal stability of CsPbI ₃ perovskite Wang, Hailiang; Xiang, Sisi; Li, Weiping Journal of Materials Chemistry C, Vol. 7, Issue 38 https://doi.org/10.1039/c9tc03576a	journal	January 2019
Stabilization of all-inorganic α -CsPbI ₃ perovskite by Bi or Sb doping Zhang, Jiajia; Yang, Lei; Liu, Renyong Materials Research Express, Vol. 6, Issue 10 https://doi.org/10.1088/2053-1591/ab3b84	journal	August 2019
Thermodynamically stabilized β-CsPbI ₃ –based perovskite solar cells with efficiencies >18% Wang, Yong; Dar, M. Ibrahim; Ono, Luis K. Science, Vol. 365, Issue 6453 https://doi.org/10.1126/science.aav8680	journal	August 2019
Unveiling Property of Hydrolysis-Derived DMAPbI3 for Perovskite Devices: Composition Engineering, Defect Mitigation, and Stability Optimization Pei, Yunhe; Liu, Yang; Li, Faming iScience, Vol. 15 https://doi.org/10.1016/j.isci.2019.04.024	journal	May 2019
Incorporating Large A Cations into Lead Iodide Perovskite Cages: Relaxed Goldschmidt Tolerance Factor and Impact on Exciton–Phonon Interaction Fu, Yongping; Hautzinger, Matthew P.; Luo, Ziyu ACS Central Science, Vol. 5, Issue 8 https://doi.org/10.1021/acscentsci.9b00367	journal	July 2019

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14 SOLAR ENERGY
catalysis (homogeneous)
catalysis (heterogeneous)
solar (photovoltaic)
solar (fuels)
optics
phonons
photosynthesis (natural and artificial)
bio-inspired
hydrogen and fuel cells
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Title: Myths and reality of HPbI3 in halide perovskite solar cells

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Title: Myths and reality of HPbI₃ in halide perovskite solar cells