Addictive-assisted construction of all-inorganic CsSnIBr2mesoscopic perovskite solar cells with superior thermal stability up to 473 K
- 10 October 2016
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry A
- Vol. 4 (43), 17104-17110
- https://doi.org/10.1039/c6ta08332c
Abstract
The poor stability of hybrid organic–inorganic perovskite is one of crucial problems limiting the practical application of the perovskite solar cells (PSCs). All-inorganic lead-free perovskite materials, with Cs replacing the organic cations and Sn replacing Pb, have shown great potential in achieving high thermal stability. However, tin-based perovskites have inevitably suffered from severe bulk recombination, attributed to Sn vacancies. In this work, we obtain CsSnIBr2 thin films with low Sn vacancy assisted by the addition of hypophosphorous acid (HPA). The HPA additive here as complexant is demonstrated to be capable of speeding up the nucleation process while inhibiting the formation of Sn4+ during the formation process of CsSnIBr2 thin films. With a mesoscopic architecture, the CsSnIBr2 PSCs exhibit efficiency-loss free in 77 days and remarkably stable power output within 9 hours at high temperatures up to 473 K.Keywords
Funding Information
- National Natural Science Foundation of China (51273104, 91433205)
This publication has 49 references indexed in Scilit:
- Enhanced UV-light stability of planar heterojunction perovskite solar cells with caesium bromide interface modificationEnergy & Environmental Science, 2016
- Controllable Grain Morphology of Perovskite Absorber Film by Molecular Self-Assembly toward Efficient Solar Cell Exceeding 17%Journal of the American Chemical Society, 2015
- Two‐Inch‐Sized Perovskite CH3NH3PbX3 (X = Cl, Br, I) Crystals: Growth and CharacterizationAdvanced Materials, 2015
- High-performance photovoltaic perovskite layers fabricated through intramolecular exchangeScience, 2015
- Compositional engineering of perovskite materials for high-performance solar cellsNature, 2015
- A hole-conductor–free, fully printable mesoscopic perovskite solar cell with high stabilityScience, 2014
- The emergence of perovskite solar cellsNature Photonics, 2014
- Efficient planar heterojunction perovskite solar cells by vapour depositionNature, 2013
- Sequential deposition as a route to high-performance perovskite-sensitized solar cellsNature, 2013
- Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide PerovskitesScience, 2012