Chalcogenide perovskites for photovoltaics: current status and prospects

Tiwari, Devendra; Hutter, Oliver S.; Longo, Giulia

doi:10.1088/2515-7655/abf41c

Cited by 55 publications

(33 citation statements)

References 80 publications

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“…8,9 Recently, it has been proposed that ternary chalcogenides (TCs) with the general formula ABX 3 (where A and B are metals and X is S or Se), especially with the perovskite crystal structure, may be an appealing alternative, thanks to the electronic properties analogous to HOIPs, and a broad variety of possible chemical compositions that can be chosen to avoid the use of lead or other toxic metals. [10][11][12] It has also been shown that the experimentally prepared TCs exhibit good chemical properties and a high thermal stability. 9,[13][14][15][16] From the perspective of practical applications of TCs in optoelectronics, it is important to understand how they are affected by various thermodynamic conditions.…”

Section: Introductionmentioning

confidence: 99%

Understanding the structure-band gap relationship in SrZrS₃ at elevated temperatures: a detailed NPT MD study

2022

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Section: Introductionmentioning

confidence: 99%

Understanding the structure-band gap relationship in SrZrS₃ at elevated temperatures: a detailed NPT MD study

2022

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“…For concluding this section on inorganic HTMs, we highlight the last works exploiting 2D TMD HTMs [51,82] exceeding the 20% PCE threshold. 2D WS 2 was applied in p-i-n devices by Liu et al, [83] exploiting its ultrahigh hole mobility and its capability of driving high-quality epitaxial growth of the perovskite thin film, thus achieving about 21% PCE.…”

Section: Inorganic Htms For Pscsmentioning

confidence: 99%

The Non‐Innocent Role of Hole‐Transporting Materials in Perovskite Solar Cells

et al. 2021

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Spiro-OMeTAD (2,2 0 ,7,7 0 -tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9 0 -spirobifluorene, from now on simply Spiro) is the most used and applied hole-transporting material (HTM) in perovskite solar cells (PSCs). The reason is straightforward: after opportune formulation (i.e., addition of 4-tert-butylpyridine, tBP, and lithium bis(trifluoromethylsulfonyl)-imide, LiTFSI, as dopants/additives), the planar PSCs normally achieve the highest power conversion efficiencies (PCEs) at lab scale (up to 24%). [1] However, this result is strongly overestimated when compared with the longterm stability of the device: it has been already largely proved by several works that the necessary doping of the organic material augments the hygroscopic character of the layer, thus favoring moisture uptake from the atmosphere and subsequent perovskite film decomposition. [2,3] Combined with its notable cost (nowadays slightly decreasing due to the presence of more producers on the market), [4,5] we can assert that Spiro is only a model/benchmark HTM useful for lab-scale PSC production and testing. This is a pity indeed, because it possesses all the properties required for a good performing HTM: the high glass transition temperature due to the Spiro-type bond, the smooth film morphology that it forms, the relative simple processing, the electrochemical stability, the optical transparency in the visible window, the amorphous nature, the optimal band alignment with the perovskite valence band, and the chemical compatibility with dopants. Despite these very promising properties therefore, the high costs and very low inherent hole conductivity hugely reduce the possible commercialization of Spiro-based PSCs and force scientists to identify new avenues for obtaining long-term stability and for simplifying device processing methods.

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“…As the chalcogenide counterparts of halide perovskites, − chalcogenide perovskites (perovskites with oxygen, sulfur, or selenium as anions) can serve as promising alternatives consisting of nontoxic and abundant elements. − Recently, Ruddlesden–Popper-type layered chalcogenide perovskites have been proved by experiments or predicated by theoretical calculations to have low band gaps and large optical absorption coefficients so that they could be potential next-generation sustainable semiconductor materials. For example, the graphene-like 2D Ca 3 Sn 2 S 7 chalcogenide perovskite (1L, 2L, and 3L) reported by Du et al.…”

Section: Introductionmentioning

confidence: 99%

Marked Near-Infrared Response of 2D Ca₃Sn₂S₇ Chalcogenide Perovskite via Solid and Electronic Structure Engineering

Meng

et al. 2021

J. Phys. Chem. C

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Developing high-performance photodetectors relies on the continuous innovation of photoelectric conversion materials.Here, we theoretically study a newly proposed photoelectric material based on the graphene-like two-dimensional (2D) Ca 3 Sn 2 S 7 chalcogenide perovskite by employing the macroscopic continuum device (MCD) model and the Shockley−Queisser limit (SQM) model. Based on these key properties quantum mechanically calculated, we compared the photoelectric response of Ca 3 Sn 2 S 7 perovskites by evaluating the dependence of photocurrents of different layered Ca 3 Sn 2 S 7 perovskites with film thicknesses and charge recombination rates (different recombination mechanisms). The optimized photocurrent losses from MCD simulations are smaller than 5% compared to the SQM currents, while the charge lifetime is longer than 10 −8 s and the bimolecular recombination rate constant is less than 1.0 × 10 −15 m 3 /s. Considering these effective measures to tune the charge recombination rates in experiments, our simulations predict superior IR detection performance when Ca 3 Sn 2 S 7 is used in a photodetector device based on the spectral short-circuit currents per unit wavelength. As a comparison, we further simulate the photoelectric performance of 2D phosphorene and tellurene and elucidate that the photocurrent losses of Ca 3 Sn 2 S 7 perovskites are smaller as a result of higher mobilities.

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Chalcogenide perovskites for photovoltaics: current status and prospects

Cited by 55 publications

References 80 publications

Understanding the structure-band gap relationship in SrZrS₃ at elevated temperatures: a detailed NPT MD study

Understanding the structure-band gap relationship in SrZrS₃ at elevated temperatures: a detailed NPT MD study

The Non‐Innocent Role of Hole‐Transporting Materials in Perovskite Solar Cells

Marked Near-Infrared Response of 2D Ca₃Sn₂S₇ Chalcogenide Perovskite via Solid and Electronic Structure Engineering

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Chalcogenide perovskites for photovoltaics: current status and prospects

Cited by 55 publications

References 80 publications

Understanding the structure-band gap relationship in SrZrS3 at elevated temperatures: a detailed NPT MD study

Understanding the structure-band gap relationship in SrZrS3 at elevated temperatures: a detailed NPT MD study

The Non‐Innocent Role of Hole‐Transporting Materials in Perovskite Solar Cells

Marked Near-Infrared Response of 2D Ca3Sn2S7 Chalcogenide Perovskite via Solid and Electronic Structure Engineering

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Understanding the structure-band gap relationship in SrZrS₃ at elevated temperatures: a detailed NPT MD study

Understanding the structure-band gap relationship in SrZrS₃ at elevated temperatures: a detailed NPT MD study

Marked Near-Infrared Response of 2D Ca₃Sn₂S₇ Chalcogenide Perovskite via Solid and Electronic Structure Engineering