journal article·2021Open access

Octahedral distortion driven by CsPbI 3 nanocrystal reaction temperature – the effects on phase stability and beyond

Anastasia Matuhina, G. Krishnamurthy Grandhi, Maning Liu, Jan-Henrik Smått, N. S. M. Viswanath, Harri Ali-Löytty, Kimmo Lahtonen, Paola Vivo

Nanoscale· Volume 13· Issue 33

Abstract

NCs, encompassing dispersions, films, and even devices by tuning the hot-injection temperature between 120-170 °C. Our findings suggest that the transition from the black to the yellow phase occurs after over a month for NCs synthesized at 150 °C (150@NCs). Structural refinement studies attribute the enhanced stability of 150@NCs to their observed lowest octahedral distortion. The 150@NCs also lead to stable unencapsulated solar cells with unchanged performance upon 26 days of shelf storage in dry air. Our study underlines the importance of scrutinizing synthesis parameters for designing stable perovskite NCs towards long-lasting optoelectronic devices.
Source: openalex_inverted_index · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Perovskite Materials and Applications · Optical properties and cooling technologies in crystalline materials · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, FI-33014 Tampere, Finland

Laboratory of Molecular Science and Engineering, Åbo Akademi University, Henriksgatan 2, FI-20500 Turku, Finland

School of Materials Science and Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, Republic of Korea

Surface Science Group, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 692, FI-33014 Tampere, Finland

Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 692, FI-33014 Tampere, Finland

Funding

Academy of Finland · Tampereen Yliopisto · Suomen Kulttuurirahasto · Jane ja Aatos Erkon Säätiö

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