| Full text | |
| Author(s): |
Sutanto, Albertus A.
[1]
;
Szostak, Rodrigo
[2, 3]
;
Drigo, Nikita
[1]
;
Queloz, Valentin I. E.
[1]
;
Marchezi, P. E.
[2]
;
Germino, J. C.
[2]
;
Tolentino, Helio C. N.
[3]
;
Nazeeruddin, Mohammad Khaja
[1]
;
Nogueira, Ana Flavia
[2]
;
Grancini, Giulia
[4, 1, 5]
Total Authors: 10
|
| Affiliation: | [1] Ecole Polytech Fed Lausanne EPFL, Grp Mol Engn Funct Mat, Inst Chem Sci & Engn, CH-1951 Sion - Switzerland
[2] Univ Campinas UNICAMP, Chem Inst, Lab Nanotecnol & Energia Solar LNES, BR-13083970 Campinas - Brazil
[3] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Synchrotron Light Lab LNLS, BR-13083970 Campinas - Brazil
[4] Univ Pavia, Dept Chem, I-27100 Pavia - Italy
[5] Univ Pavia, INSTM, I-27100 Pavia - Italy
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | Nano Letters; v. 20, n. 5, p. 3992-3998, MAY 13 2020. |
| Web of Science Citations: | 6 |
| Abstract | |
Engineering 2D/3D perovskite interfaces is a common route to realizing efficient and stable perovskite solar cells. Whereas 2D perovskite's main function in trap passivation has been identified and is confirmed here, little is known about its 2D/3D interface properties under thermal stress, despite being one of the main factors that induces device instability. In this work, we monitor the response of two typical 2D/3D interfaces under a thermal cycle by in situ X-ray scattering. We reveal that upon heating, the 2D crystalline structure undergoes a dynamical transformation into a mixed 2D/3D phase, keeping the 3D bulk underneath intact. The observed 3D bulk degradation into lead iodide is blocked, revealing the paramount role of 2D perovskite in engineering stable device interfaces. (AU) | |
| FAPESP's process: | 17/11986-5 - Generation and storage of New Energy: bringing technological development for the country |
| Grantee: | Ana Flávia Nogueira |
| Support Opportunities: | Research Grants - Research Centers in Engineering Program |
| FAPESP's process: | 17/12582-5 - Perovskites with mixed cations: Relationship between structure, composition, electronic properties and efficiency of solar cells |
| Grantee: | Rodrigo Szostak |
| Support Opportunities: | Scholarships in Brazil - Doctorate |