Proceedings of International Conference on Perovskite Thin Film Photovoltaics and Perovskite Photonics and Optoelectronics (NIPHO22)
DOI: https://doi.org/10.29363/nanoge.nipho.2022.014
Publication date: 11th November 2021
Perovskite solar cells (PSCs) have reached power conversion efficiency (PCE) of 25.6% [1], for active areas smaller than 1 cm2. Even if their operational stability is also improving [2-3], this still represent a key aspect to be tacked to for their industrial development.
Lately, we have demonstrated highly efficient, large area, planar PSCs where the MAPbI3 perovskite layer has been deposited by thermal co-evaporation of PbI2 and MAI. The high-quality co-evaporated perovskite thin films are uniform over large areas showing low surface roughness, and a long carrier lifetime. The high-quality perovskite thin films together with vacuum processed charge transport layers PSCs with PCE above 20% in both n.i.p [4, 5] and p.i.n [6] configurations and mini-modules achieved record PCEs of 18.13% and 18.4% for active areas of 20 cm2 [4] and 6.4 cm2 [7].
Thermal stability is a critical criterion for assessing the long-term stability of PSCs. We have shown that un-encapsulated co-evaporated MAPbI3 PSCs [8] demonstrate remarkable thermal stability even in an n-i-p structure that employs Spiro-OMeTAD as hole transport material (HTM). MAPbI3 PSCs maintain over ≈95% and ≈80% of their initial PCE after 1000 and 3600 h respectively under continuous thermal aging at 85 °C. Co-evaporated MAPbI3 PSCs demonstrate remarkable structural robustness, absence of pinholes, or significant variation in grain sizes, and intact interfaces with the HTM, upon prolonged thermal aging. Here, the main factors driving the co-evaporated MAPbI3 stability are assessed. It is demonstrated that the excellent co-evaporated MAPbI3 thermal stability is related to the perovskite growth process leading to a compact and almost strain-stress-free film. On the other hand, un-encapsulated PSCs with the same architecture, but incorporating solution-processed MAPbI3 or Cs0.05(MA0.17FA0.83)0.95Pb(I0.83Br0.17)3 as active layers, show a complete PCE degradation after 500 h under the same thermal aging condition. These results highlight that the control of the perovskite growth process can substantially enhance the PSCs thermal stability, besides the chemical composition.
The co-evaporated MAPbI3 impressive long-term thermal stability features the potential for field-operating conditions.
References:
1. NREL. Best Research-Cell Efficiency Chart; U.S. Department of Energy; https://www.nrel.gov/pv/cell-efficiency.htm.
2. S. Yang, S. Chen, E. Mosconi, Y. Fang, X. Xiao, C. Wang, Y. Zhou, Z. Yu, J. Zhao, Y. Gao, Science 2019, 365, 473.
3. Y. Wang, T. Wu, J. Barbaud, W. Kong, D. Cui, H. Chen, X. Yang, L. Han, Science 2019 365, 687.
4. J. Li, H. Wang, X. Y. Chin, H. A. Dewi, K. Vergeer, T. W. Goh, J. W. M. Lim, J. H. Lew, K. P. Loh, C. Soci, T. C. Sum, H. J. Bolink, N. Mathews, S. Mhaisalkar, A. Bruno, Joule 2020, 4, 1035
5. J Li, HA Dewi, W Hao, N Mathews, S Mhaisalkar, A Bruno, Coatings, 2020 10(12), 1163
6. J Li, HA Dewi, W Hao, J Zhao, N Tiwari, N Yantara, T Malinauskas, V Getautis, T J. Savenije, N Mathews, S. Mhaisalkar, A Bruno, Adv. Funct. Mater. 2021.
7. L Li, HA Dewi, W Hao, L Jia Haur, N Mathews, S Mhaisalkar, A Bruno, Solar RRL, 2020, 4, 2000473
8. HA Dewi, L Li, W Hao, N Mathews, S Mhaisalkar, A Bruno, Adv. Funct. Mater. 2021 2100557,
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.