An embedded interfacial network stabilizes inorganic CsPbI3 perovskite thin films

Julian A. Steele; Tom Braeckevelt; Vittal Prakasam; Giedrius Degutis; Haifeng Yuan; Handong Jin; Eduardo Solano; Pascal Puech; Shreya Basak; Maria Isabel Pintor-Monroy; Hans Van Gorp; Guillaume Fleury; Ruo Xi Yang; Zhenni Lin; Haowei Huang; Elke Debroye; Dmitry Chernyshov; Bin Chen; Mingyang Wei; Yi Hou; Robert Gehlhaar; Jan Genoe; Steven De Feyter; Sven M.J. Rogge; Aron Walsh; Edward H. Sargent; Peidong Yang; Johan Hofkens; Veronique Van Speybroeck; Maarten B.J. Roeffaers

doi:10.1038/s41467-022-35255-9

An embedded interfacial network stabilizes inorganic CsPbI₃ perovskite thin films

Julian A. Steele, Tom Braeckevelt, Vittal Prakasam, Giedrius Degutis, Haifeng Yuan, Handong Jin, Eduardo Solano, Pascal Puech, Shreya Basak, Maria Isabel Pintor-Monroy, Hans Van Gorp, Guillaume Fleury, Ruo Xi Yang, Zhenni Lin, Haowei Huang, Elke Debroye, Dmitry Chernyshov, Bin Chen, Mingyang Wei, Yi HouRobert Gehlhaar, Jan Genoe, Steven De Feyter, Sven M.J. Rogge, Aron Walsh, Edward H. Sargent, Peidong Yang, Johan Hofkens, Veronique Van Speybroeck, Maarten B.J. Roeffaers

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The black perovskite phase of CsPbI₃ is promising for optoelectronic applications; however, it is unstable under ambient conditions, transforming within minutes into an optically inactive yellow phase, a fact that has so far prevented its widespread adoption. Here we use coarse photolithography to embed a PbI₂-based interfacial microstructure into otherwise-unstable CsPbI₃ perovskite thin films and devices. Films fitted with a tessellating microgrid are rendered resistant to moisture-triggered decay and exhibit enhanced long-term stability of the black phase (beyond 2.5 years in a dry environment), due to increasing the phase transition energy barrier and limiting the spread of potential yellow phase formation to structurally isolated domains of the grid. This stabilizing effect is readily achieved at the device level, where unencapsulated CsPbI₃ perovskite photodetectors display ambient-stable operation. These findings provide insights into the nature of phase destabilization in emerging CsPbI₃ perovskite devices and demonstrate an effective stabilization procedure which is entirely orthogonal to existing approaches.

Original language	English
Article number	7513
Journal	Nature communications
Volume	13
Issue number	1
DOIs	https://doi.org/10.1038/s41467-022-35255-9
Publication status	Published - 2022 Dec

Bibliographical note

Funding Information:
J.A.S., T.B., and S.M.J.R. acknowledge financial support from the Research Foundation - Flanders [FWO: grant No.’s 12Y7218N, V439819N, V400622N and 12Y7221N (J.A.S.), 1SC1319 (T.B), and 12T3519N (S.M.J.R.)]. J.H. and M.B.J.R. acknowledge financial support from the Research Foundation - Flanders (FWO) through research projects (FWO Grant No’s G098319N, S002019N "PROCEED", S004322N "GIGAPIXEL") and ZW15_09-GOH6316), from the KU Leuven Research fund (iBOF-21-085 "PERSIST") and from the Flemish government through long term structural Methusalem funding (CASAS2, Meth/15/04). V.V.S. acknowledges funding from the European Union’s Horizon 2020 research and innovation program (consolidator ERC grant agreement no. 647755 – DYNPOR, 2015–2020) as well as from the Research Board of Ghent University (BOF). S.D.F. acknowledges continuous support from the FWO and KU Leuven. J.A.S. and M.B.J.R. acknowledge financial support from the KU Leuven Research Fund (C14/19/079) and KU Leuven Industrial Research Fund (C3/19/046). The computational resources and services used were provided by Ghent University (Stevin Supercomputer Infrastructure) and the VSC (Flemish Supercomputer Center), funded by FWO. E.H.S. acknowledges financial support from the U.S. Department of the Navy, Office of Naval Research (N00014-20-1-2572). M.I.P.M., R.G., and J.G. acknowledge funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 835133 “ULTRA-LUX”). P.Y. and Z.L. acknowledge the support from U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, under Contract No. DE-AC02-05-CH11231 within Physical Chemistry of Inorganic Nanostructures Program (KC3103).

Publisher Copyright:
© 2022, The Author(s).

All Science Journal Classification (ASJC) codes

Chemistry(all)
Biochemistry, Genetics and Molecular Biology(all)
General
Physics and Astronomy(all)

Access to Document

10.1038/s41467-022-35255-9

Cite this

Steele, J. A., Braeckevelt, T., Prakasam, V., Degutis, G., Yuan, H., Jin, H., Solano, E., Puech, P., Basak, S., Pintor-Monroy, M. I., Van Gorp, H., Fleury, G., Yang, R. X., Lin, Z., Huang, H., Debroye, E., Chernyshov, D., Chen, B., Wei, M., ... Roeffaers, M. B. J. (2022). An embedded interfacial network stabilizes inorganic CsPbI₃ perovskite thin films. Nature communications, 13(1), [7513]. https://doi.org/10.1038/s41467-022-35255-9

@article{c245b9d245e345949dd12cb1177b3d9b,

title = "An embedded interfacial network stabilizes inorganic CsPbI3 perovskite thin films",

abstract = "The black perovskite phase of CsPbI3 is promising for optoelectronic applications; however, it is unstable under ambient conditions, transforming within minutes into an optically inactive yellow phase, a fact that has so far prevented its widespread adoption. Here we use coarse photolithography to embed a PbI2-based interfacial microstructure into otherwise-unstable CsPbI3 perovskite thin films and devices. Films fitted with a tessellating microgrid are rendered resistant to moisture-triggered decay and exhibit enhanced long-term stability of the black phase (beyond 2.5 years in a dry environment), due to increasing the phase transition energy barrier and limiting the spread of potential yellow phase formation to structurally isolated domains of the grid. This stabilizing effect is readily achieved at the device level, where unencapsulated CsPbI3 perovskite photodetectors display ambient-stable operation. These findings provide insights into the nature of phase destabilization in emerging CsPbI3 perovskite devices and demonstrate an effective stabilization procedure which is entirely orthogonal to existing approaches.",

author = "Steele, {Julian A.} and Tom Braeckevelt and Vittal Prakasam and Giedrius Degutis and Haifeng Yuan and Handong Jin and Eduardo Solano and Pascal Puech and Shreya Basak and Pintor-Monroy, {Maria Isabel} and {Van Gorp}, Hans and Guillaume Fleury and Yang, {Ruo Xi} and Zhenni Lin and Haowei Huang and Elke Debroye and Dmitry Chernyshov and Bin Chen and Mingyang Wei and Yi Hou and Robert Gehlhaar and Jan Genoe and {De Feyter}, Steven and Rogge, {Sven M.J.} and Aron Walsh and Sargent, {Edward H.} and Peidong Yang and Johan Hofkens and {Van Speybroeck}, Veronique and Roeffaers, {Maarten B.J.}",

note = "Funding Information: J.A.S., T.B., and S.M.J.R. acknowledge financial support from the Research Foundation - Flanders [FWO: grant No.{\textquoteright}s 12Y7218N, V439819N, V400622N and 12Y7221N (J.A.S.), 1SC1319 (T.B), and 12T3519N (S.M.J.R.)]. J.H. and M.B.J.R. acknowledge financial support from the Research Foundation - Flanders (FWO) through research projects (FWO Grant No{\textquoteright}s G098319N, S002019N {"}PROCEED{"}, S004322N {"}GIGAPIXEL{"}) and ZW15_09-GOH6316), from the KU Leuven Research fund (iBOF-21-085 {"}PERSIST{"}) and from the Flemish government through long term structural Methusalem funding (CASAS2, Meth/15/04). V.V.S. acknowledges funding from the European Union{\textquoteright}s Horizon 2020 research and innovation program (consolidator ERC grant agreement no. 647755 – DYNPOR, 2015–2020) as well as from the Research Board of Ghent University (BOF). S.D.F. acknowledges continuous support from the FWO and KU Leuven. J.A.S. and M.B.J.R. acknowledge financial support from the KU Leuven Research Fund (C14/19/079) and KU Leuven Industrial Research Fund (C3/19/046). The computational resources and services used were provided by Ghent University (Stevin Supercomputer Infrastructure) and the VSC (Flemish Supercomputer Center), funded by FWO. E.H.S. acknowledges financial support from the U.S. Department of the Navy, Office of Naval Research (N00014-20-1-2572). M.I.P.M., R.G., and J.G. acknowledge funding from the European Research Council (ERC) under the European Union{\textquoteright}s Horizon 2020 research and innovation programme (grant agreement No 835133 “ULTRA-LUX”). P.Y. and Z.L. acknowledge the support from U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, under Contract No. DE-AC02-05-CH11231 within Physical Chemistry of Inorganic Nanostructures Program (KC3103). Publisher Copyright: {\textcopyright} 2022, The Author(s).",

year = "2022",

month = dec,

doi = "10.1038/s41467-022-35255-9",

language = "English",

volume = "13",

journal = "Nature Communications",

issn = "2041-1723",

publisher = "Nature Publishing Group",

number = "1",

}

Steele, JA, Braeckevelt, T, Prakasam, V, Degutis, G, Yuan, H, Jin, H, Solano, E, Puech, P, Basak, S, Pintor-Monroy, MI, Van Gorp, H, Fleury, G, Yang, RX, Lin, Z, Huang, H, Debroye, E, Chernyshov, D, Chen, B, Wei, M, Hou, Y, Gehlhaar, R, Genoe, J, De Feyter, S, Rogge, SMJ, Walsh, A, Sargent, EH, Yang, P, Hofkens, J, Van Speybroeck, V & Roeffaers, MBJ 2022, 'An embedded interfacial network stabilizes inorganic CsPbI₃ perovskite thin films', Nature communications, vol. 13, no. 1, 7513. https://doi.org/10.1038/s41467-022-35255-9

TY - JOUR

T1 - An embedded interfacial network stabilizes inorganic CsPbI3 perovskite thin films

AU - Steele, Julian A.

AU - Braeckevelt, Tom

AU - Prakasam, Vittal

AU - Degutis, Giedrius

AU - Yuan, Haifeng

AU - Jin, Handong

AU - Solano, Eduardo

AU - Puech, Pascal

AU - Basak, Shreya

AU - Pintor-Monroy, Maria Isabel

AU - Van Gorp, Hans

AU - Fleury, Guillaume

AU - Yang, Ruo Xi

AU - Lin, Zhenni

AU - Huang, Haowei

AU - Debroye, Elke

AU - Chernyshov, Dmitry

AU - Chen, Bin

AU - Wei, Mingyang

AU - Hou, Yi

AU - Gehlhaar, Robert

AU - Genoe, Jan

AU - De Feyter, Steven

AU - Rogge, Sven M.J.

AU - Walsh, Aron

AU - Sargent, Edward H.

AU - Yang, Peidong

AU - Hofkens, Johan

AU - Van Speybroeck, Veronique

AU - Roeffaers, Maarten B.J.

N1 - Funding Information: J.A.S., T.B., and S.M.J.R. acknowledge financial support from the Research Foundation - Flanders [FWO: grant No.’s 12Y7218N, V439819N, V400622N and 12Y7221N (J.A.S.), 1SC1319 (T.B), and 12T3519N (S.M.J.R.)]. J.H. and M.B.J.R. acknowledge financial support from the Research Foundation - Flanders (FWO) through research projects (FWO Grant No’s G098319N, S002019N "PROCEED", S004322N "GIGAPIXEL") and ZW15_09-GOH6316), from the KU Leuven Research fund (iBOF-21-085 "PERSIST") and from the Flemish government through long term structural Methusalem funding (CASAS2, Meth/15/04). V.V.S. acknowledges funding from the European Union’s Horizon 2020 research and innovation program (consolidator ERC grant agreement no. 647755 – DYNPOR, 2015–2020) as well as from the Research Board of Ghent University (BOF). S.D.F. acknowledges continuous support from the FWO and KU Leuven. J.A.S. and M.B.J.R. acknowledge financial support from the KU Leuven Research Fund (C14/19/079) and KU Leuven Industrial Research Fund (C3/19/046). The computational resources and services used were provided by Ghent University (Stevin Supercomputer Infrastructure) and the VSC (Flemish Supercomputer Center), funded by FWO. E.H.S. acknowledges financial support from the U.S. Department of the Navy, Office of Naval Research (N00014-20-1-2572). M.I.P.M., R.G., and J.G. acknowledge funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 835133 “ULTRA-LUX”). P.Y. and Z.L. acknowledge the support from U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, under Contract No. DE-AC02-05-CH11231 within Physical Chemistry of Inorganic Nanostructures Program (KC3103). Publisher Copyright: © 2022, The Author(s).

PY - 2022/12

Y1 - 2022/12

N2 - The black perovskite phase of CsPbI3 is promising for optoelectronic applications; however, it is unstable under ambient conditions, transforming within minutes into an optically inactive yellow phase, a fact that has so far prevented its widespread adoption. Here we use coarse photolithography to embed a PbI2-based interfacial microstructure into otherwise-unstable CsPbI3 perovskite thin films and devices. Films fitted with a tessellating microgrid are rendered resistant to moisture-triggered decay and exhibit enhanced long-term stability of the black phase (beyond 2.5 years in a dry environment), due to increasing the phase transition energy barrier and limiting the spread of potential yellow phase formation to structurally isolated domains of the grid. This stabilizing effect is readily achieved at the device level, where unencapsulated CsPbI3 perovskite photodetectors display ambient-stable operation. These findings provide insights into the nature of phase destabilization in emerging CsPbI3 perovskite devices and demonstrate an effective stabilization procedure which is entirely orthogonal to existing approaches.

AB - The black perovskite phase of CsPbI3 is promising for optoelectronic applications; however, it is unstable under ambient conditions, transforming within minutes into an optically inactive yellow phase, a fact that has so far prevented its widespread adoption. Here we use coarse photolithography to embed a PbI2-based interfacial microstructure into otherwise-unstable CsPbI3 perovskite thin films and devices. Films fitted with a tessellating microgrid are rendered resistant to moisture-triggered decay and exhibit enhanced long-term stability of the black phase (beyond 2.5 years in a dry environment), due to increasing the phase transition energy barrier and limiting the spread of potential yellow phase formation to structurally isolated domains of the grid. This stabilizing effect is readily achieved at the device level, where unencapsulated CsPbI3 perovskite photodetectors display ambient-stable operation. These findings provide insights into the nature of phase destabilization in emerging CsPbI3 perovskite devices and demonstrate an effective stabilization procedure which is entirely orthogonal to existing approaches.

UR - http://www.scopus.com/inward/record.url?scp=85143389802&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85143389802&partnerID=8YFLogxK

U2 - 10.1038/s41467-022-35255-9

DO - 10.1038/s41467-022-35255-9

M3 - Article

C2 - 36473874

AN - SCOPUS:85143389802

SN - 2041-1723

VL - 13

JO - Nature Communications

JF - Nature Communications

IS - 1

M1 - 7513

ER -