Searching for promising new perovskite-based photovoltaic absorbers: the importance of electronic dimensionality
TLDR
In this article, the authors show that perovskite-based solar cells should have a high electronic dimensionality, because of barriers to isotropic current flow, enhanced electron/hole effective masses and fundamentally deeper defect states.Abstract:
Searching for promising nontoxic and air-stable perovskite absorbers for solar cell applications has drawn extensive attention. Here, we show that a promising perovskite absorber should exhibit a high electronic dimensionality. Semiconductors that exhibit a high structural dimensionality, but a low electronic dimensionality have less promise as an absorber, because of barriers to isotropic current flow, enhanced electron/hole effective masses and fundamentally deeper defect states (more effective at causing recombination). Our concept accounts for the device performance of the perovskite-based solar cells reported in literature so far.read more
Citations
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Efficient and stable emission of warm-white light from lead-free halide double perovskites
Jiajun Luo,Xiaoming Wang,Shunran Li,Jing Liu,Yueming Guo,Guangda Niu,Li Yao,Yuhao Fu,Liang Gao,Liang Gao,Qingshun Dong,Chunyi Zhao,Meiying Leng,Fusheng Ma,Wenxi Liang,Liduo Wang,Shengye Jin,Junbo Han,Lijun Zhang,Joanne Etheridge,Jianbo Wang,Yanfa Yan,Edward H. Sargent,Jiang Tang +23 more
TL;DR: After alloying with metal cations, a lead-free halide double perovskite shows stable performance and remarkably efficient white-light emission, with possible applications in lighting and display technologies.
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Understanding the physical properties of hybrid perovskites for photovoltaic applications
TL;DR: In this paper, a review summarizes advances in understanding the unique physical properties of hybrid perovskites that enable the fabrication of high-efficiency solar cells with high open-circuit voltages, which is crucial for their further development towards commercialization.
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From Lead Halide Perovskites to Lead-Free Metal Halide Perovskites and Perovskite Derivatives
TL;DR: Reviews on the theoretical understanding of the electronic, optical, and defect properties of Pb and Pb-free halide perovskites andperovskite derivatives are provided, as well as the experimental results available in the literature.
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Self-Trapped Excitons in All-Inorganic Halide Perovskites: Fundamentals, Status, and Potential Applications
TL;DR: An overview of various photoluminescence phenomena with the emphasis on the mechanism and characteristics of emission derived from STEs, followed by the introduction of STE emission in hybrid halide perovskites and all-inorganic STE emitters.
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Progress on Perovskite Materials and Solar Cells with Mixed Cations and Halide Anions
TL;DR: The recent progress on the synthesis and fundamental aspects of mixed cation and halide perovskites correlating with device performance, long-term stability, and hysteresis are reviewed.
References
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Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells
TL;DR: Two organolead halide perovskite nanocrystals were found to efficiently sensitize TiO(2) for visible-light conversion in photoelectrochemical cells, which exhibit strong band-gap absorptions as semiconductors.
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Interface engineering of highly efficient perovskite solar cells
Huanping Zhou,Qi Chen,Gang Li,Song Luo,Tze Bing Song,Hsin Sheng Duan,Ziruo Hong,Jingbi You,Yongsheng Liu,Yang Yang +9 more
TL;DR: Perovskite films received a boost in photovoltaic efficiency through controlled formation of charge-generating films and improved current transfer to the electrodes and low-temperature processing steps allowed the use of materials that draw current out of the perovskites layer more efficiently.