Lead‐Free Halide Double Perovskites: Fundamentals, Challenges, and Photovoltaics Applications

Tailor, Naveen Kumar; Listorti, Andrea; Colella, Silvia; Satapathi, Soumitra

doi:10.1002/admt.202200442

Cited by 43 publications

(24 citation statements)

References 122 publications

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“…Lead-free Cs 2 AgBiBr 6 double perovskites have gained considerable attention recently because of their low toxicity, high environmental and structural stability, defect tolerance, and exceptional optoelectronic characteristics. − Consequently, they have increasingly been used in solar cells, photodetectors, X-ray detectors, and also photocatalyst applications. − Most of these applications require high-quality perovskite single crystals (SCs). Efforts including crystal annealing, surface treatment, interface engineering, and additive engineering have been devoted to device engineering to achieve optimum performance of these Cs 2 AgBiBr 6 SC-based detectors. ,− However, the physical properties of the perovskite will impose intrinsic limitations on performance. − The connection between the structural and photophysical properties has encouraged studies that investigate the dynamics of charge carriers in Cs 2 AgBiBr 6 following photoexcitation. − In the case of Cs 2 AgBiBr 6 perovskite, strong electron–phonon interaction was observed previously. ,− Strong electron–phonon coupling can increase carrier scattering and reduce carrier mobility. Polaron formation was also observed previously in the Cs 2 AgBiBr 6 system .…”

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confidence: 97%

Elucidating Polaron Dynamics in Cs₂AgBiBr₆ Double Perovskite

Tailor

Saini

Yadav

et al. 2023

J. Phys. Chem. Lett.

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Lead-free Cs2AgBiBr6 double perovskites have recently emerged as a possible alternative to lead-based halide perovskites for photovoltaic and optoelectronic applications. Significant research efforts have been devoted toward device engineering to enhance the performance of Cs2AgBiBr6 double-perovskite-based photovoltaic and optoelectronic devices; however, less attention has been paid to address their intrinsic photophysical properties. In this work, we have shown that the small polaron formation under photoexcitation and polaron localization limits the carrier dynamics in Cs2AgBiBr6 double halide perovskites. Furthermore, temperature-dependent ac conductivity measurement reveals that single polaron hopping is the dominant conduction mechanism. Ultrafast transient absorption spectroscopy reveals that a deformed lattice under photoexcitation leads to the formation of small polarons which act as self-trapped states (STSs) and lead to the ultrafast trapping of charge carriers. Our findings provide an in-depth understanding of intrinsic limitations of Cs2AgBiBr6 perovskites, which can be applicable for other bismuth-based semiconductors.

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mentioning

confidence: 97%

Elucidating Polaron Dynamics in Cs₂AgBiBr₆ Double Perovskite

Tailor

Saini

Yadav

et al. 2023

J. Phys. Chem. Lett.

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“…Therefore, irrespective of the high efficiency of lead‐based PVSCs, it is mandatory to explore a new path for eco‐friendly lead‐free perovskite materials for photovoltaic applications. [ 249 ]…”

Section: State‐of‐the‐art and Recent Progressmentioning

confidence: 99%

Biomass‐Derived Materials for Interface Engineering in Organic/Perovskite Photovoltaic and Light‐Emitting Devices

Islam

Usman

Haider

et al. 2023

Adv Materials Technologies

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resources involves the conversion of sunlight energy directly to electricity using photovoltaic technologies. In this regard, extensive research efforts are being been focused on the development of new photovoltaic devices, including organic solar cells (OSCs), perovskite solar cells (PVSCs), and organic light-emitting diodes (OLEDs). [1,2] Such devices benefit from the numerous advantages of organic compounds, which can be chemically modified to achieve the desired device performance. [3][4][5][6] With decades of study, organic semiconductors now exhibit outstanding electronic and structural properties that has led to the fabrication of innovative organic devices with impressive output characteristics, including high field-effect mobility (10 cm 2 V −1 s −1 ) in organic field-effect transistors (OFETs), and high efficiencies of 17% in OSCs and 25% in PVSCs. [7][8][9][10][11][12][13][14][15] Furthermore, the inexpensive access of organic materials that can be processed through low-cost solution processing methods is widely attractive for practical applications that require the light-weight devices to be flexible and transparent. [16] The performance of organic electronic devices depends primarily on the properties of the active layer and electrodes, but also relies heavily on the properties of the various device interfaces. In recent years, a remarkable advancement in device Compared to their inorganic counterparts, organic optoelectronic devices receive considerable attention due to their lower cost, mechanical flexibility, bandgap engineering, and solution processability. In particular, achieving sustainability in solar cells and light emitting devices is an important milestone in the development of green electronics. This has facilitated a close collaboration between different technological fields, opening new ways for low-cost production and application of biomaterials. Recently, biomass materials, mainly derived from plants, animals and microorganisms, have emerged as effective candidates to modify the interfacial properties, and thus enhance the performance, lifetime, and stability of organic solar cells (OSCs), perovskite solar cells (PVSCs), and organic light-emitting diodes (OLEDs). Compared to the commonly used synthetic interfacial materials, the use of biomass interlayer materials (BIMs) is still in its embryonic stages; however, their nontoxicity, biorelevance, sustainability, special proton conductivity, and rich functional groups are stimulating researchers around the globe to fabricate novel devices with improved efficiency. Herein, a comprehensive review of BIMs and their importance in next-generation optoelectronic devices is provided. A welltargeted comparison between the electrical and physical properties of different BIMs is provided, and how such characteristics improve the performance of three key optoelectronic devices: OSCs, PVSCs and OLEDs, is discussed.

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“…Along with the variety of chemical compositions of lead‐free perovskite materials, the chemical approaches to their synthesis and passivation are not yet fully explored [97] . Recently, Tailor et al [121] . discussed the recent advances and strategies that have been previously demonstrated in the literature to increase the PV performance of double perovskites, but they affirm that some obstacles need to be overcome, such as the quality of the manufactured films, the use of adequate transport layers, and the design of the device.…”

Section: Double Perovskitesmentioning

confidence: 99%

Lead‐Free Metal Halide Perovskite Nanocrystals: From Fundamentals to Applications

Carvalho¹,

Magalhães²,

Santos

et al. 2022

Chemistry A European J

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Lead (Pb) halide perovskite nanocrystals, with the general formula APbX3, where A=CH3NH3+, CH(NH2)2+, or Cs+ and X=Cl−, Br−, or I−, have emerged as a class of materials with promising properties due to their remarkable optical properties and solar cell performance. However, important issues still need to be addressed to enable practical applications of these materials, such as instability, mass production, and Pb toxicity. Recent studies have carried out the replacement of Pb by various less‐toxic cations as Sn, Ge, Sb, and Bi. This variety of chemical compositions provide Pb‐free perovskite and metal halide nanostructures with a wide spectral range, in addition to being considered less toxic, therefore having greater practical applicability. Highlighting the necessity to address and solve the toxicity problems related to Pb‐containing perovskite, this review considers the prospects of the Pb‐free perovskite, involving synthesis methods, and properties of them, including advantages, disadvantages, and applications.

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Lead‐Free Halide Double Perovskites: Fundamentals, Challenges, and Photovoltaics Applications

Cited by 43 publications

References 122 publications

Elucidating Polaron Dynamics in Cs₂AgBiBr₆ Double Perovskite

Elucidating Polaron Dynamics in Cs₂AgBiBr₆ Double Perovskite

Biomass‐Derived Materials for Interface Engineering in Organic/Perovskite Photovoltaic and Light‐Emitting Devices

Lead‐Free Metal Halide Perovskite Nanocrystals: From Fundamentals to Applications

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Lead‐Free Halide Double Perovskites: Fundamentals, Challenges, and Photovoltaics Applications

Cited by 43 publications

References 122 publications

Elucidating Polaron Dynamics in Cs2AgBiBr6 Double Perovskite

Elucidating Polaron Dynamics in Cs2AgBiBr6 Double Perovskite

Biomass‐Derived Materials for Interface Engineering in Organic/Perovskite Photovoltaic and Light‐Emitting Devices

Lead‐Free Metal Halide Perovskite Nanocrystals: From Fundamentals to Applications

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Elucidating Polaron Dynamics in Cs₂AgBiBr₆ Double Perovskite

Elucidating Polaron Dynamics in Cs₂AgBiBr₆ Double Perovskite