Journal Article10.1002/ADFM.202001557
Simultaneous Power Conversion Efficiency and Stability Enhancement of Cs2AgBiBr6 Lead-Free Inorganic Perovskite Solar Cell through Adopting a Multifunctional Dye Interlayer
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TL;DR: In this article, an effective and facile strategy is reported for improving the power conversion efficiency and stability by introducing an N719 dye interlayer, which plays multifunctional roles such as broadening the absorption spectrum, suppressing the charge carrier recombination, accelerating the hole extraction, and constructing an appropriate energy level alignment.
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Abstract: Perovskite solar cells (PSCs) are highly promising next-generation photovoltaic devices because of the cheap raw materials, ideal band gap of ≈1.5 eV, broad absorption range, and high absorption coefficient. Although lead-based inorganic-organic PSC has achieved the highest power conversion efficiency (PCE) of 25.2%, the toxic nature of lead and poor stability strongly limits the commercialization. Lead-free inorganic PSCs are potential alternatives to toxic and unstable organic-inorganic PSCs. Particularly, double-perovskite CsAgBiBr-based PSC has received interests for its all inorganic and lead-free features. However, the PCE is limited by the inherent and extrinsic defects of CsAgBiBr films. Herein, an effective and facile strategy is reported for improving the PCE and stability by introducing an N719 dye interlayer, which plays multifunctional roles such as broadening the absorption spectrum, suppressing the charge carrier recombination, accelerating the hole extraction, and constructing an appropriate energy level alignment. Consequently, the optimizing cell delivers an outstanding PCE of 2.84%, much improved as compared with other CsAgBiBr-based PSCs reported so far in the literature. Moreover, the N719 interlayer greatly enhances the stability of PSCs under ambient conditions. This work highlights a useful strategy to boost the PCE and stability of lead-free CsAgBiBr-based PSCs simultaneously, accelerating the commercialization of PSC technology.
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Citations
Pushing commercialization of perovskite solar cells by improving their intrinsic stability
Yuanhang Cheng,Liming Ding +1 more
TL;DR: In this article, the intrinsic stability of perovskite photovoltaic cells (PSCs) has been investigated, especially the stability related to the properties of the active materials.
218
Understanding the Performance-Limiting Factors of Cs2AgBiBr6 Double-Perovskite Solar Cells
Giulia Longo,Suhas Mahesh,Leonardo R. V. Buizza,Adam D. Wright,Alexandra J. Ramadan,Mojtaba Abdi-Jalebi,Mojtaba Abdi-Jalebi,Pabitra K. Nayak,Laura M. Herz,Henry J. Snaith +9 more
TL;DR: Double perovskites have recently emerged as possible alternatives to lead-based halide perovsites for photovoltaic applications as mentioned in this paper, and Cs2AgBiBr6 has been the subject of several studies.
Combined DFT, SCAPS-1D, and wxAMPS frameworks for design optimization of efficient Cs<sub>2</sub>BiAgI<sub>6</sub>-based perovskite solar cells with different charge transport layers
TL;DR: In this article , a combined DFT, SCAPS-1D, and wxAMPS frameworks are used to investigate the optimized designs of Cs2BiAgI6 double perovskite-based solar cells.
Review on recent progress of lead-free halide perovskites in optoelectronic applications
TL;DR: In this paper, the authors summarized the recent advancement of various LFHP materials and their applications in photovoltaics, light-emitting diodes (LEDs), photodetectors and other devices.
189
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TL;DR: The double perovskites Cs2AgBiBr6 and Cs 2AgBiCl6 have been synthesized from both solid state and solution routes, and X-ray diffraction measurements reveal band gaps of 2.19 eV and 2.77 eV as discussed by the authors.
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TL;DR: In this paper, the double-perovskite structure was used to incorporate nontoxic Bi3+ into the perovskiite lattice in Cs2AgBiBr6 (1), which showed a long room-temperature fundamental photoluminescence (PL) lifetime of ca. 660 ns, which is very encouraging for photovoltaic applications.
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A Bismuth-Halide Double Perovskite with Long Carrier Recombination Lifetime for Photovoltaic Applications
TL;DR: The double-perovskites are used to incorporate nontoxic Bi(3+) into the perovskite lattice in Cs2AgBiBr6 (1), which shows a long room-temperature fundamental photoluminescence (PL) lifetime and comparison between single-crystal and powder PL decay curves of 1 suggests inherently high defect tolerance.
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