Metallic tin substitution of organic lead perovskite films for efficient solar cells

Zhao, Jinjin; Liu, Wei; Jia, Chunmei; Tang, Hao; Xiao, Shengwei; Ou, Yun; Liu, Zhenghao; Wang, Chen; Zhao, Xingyu; Jin, Hongyun; Wang, Peng; Yu, Gang; Zhang, Guanglei; Liu, Jinxi

doi:10.1039/c8ta05282d

Cited by 25 publications

(15 citation statements)

References 59 publications

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“…The Sn 5p induced electronic states are highly delocalized in nature and are likely to lower the effective mass and improve the mobility and exciton diffusion lengths of holes which is beneficial for charge separation. Nevertheless, a more careful band structure calculations may still be required to maximize this unique effect because by realizing MASn 0.15 Pb 0.85 I 3 mixed metal perovskite, Zhao et al has argued a maximum amount of 15% Sn content to be the optimum addition into the perovskite lattice for improved performance . Optical measurements also revealed that substituting Pb ions for Sn ions up to 80 wt% Sn content reduces the bandgap of perovskite films.…”

Section: Photophysical Properties Of Sn Halide Perovskitesmentioning

confidence: 99%

Tin Halide Perovskites: Progress and Challenges

Yang

Igbari

Lou

et al. 2019

Advanced Energy Materials

155

121

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The chemical composition engineering of lead halide perovskites via a partial or complete replacement of toxic Pb with tin has been widely reported as a feasible process due to the suitable ionic radius of Sn and its possibility of existing in the +2 state. Interestingly, a complete replacement narrows the bandgap while a partial replacement gives an anomalous phenomenon involving a further narrowing of bandgap relative to the pure Pb and Sn halide perovskite compounds. Unfortunately, the merits of this anomalous behavior have not been properly harnessed. Although promising progress has been made to advance the properties and performance of Sn‐based perovskite systems, their photovoltaic (PV) parameters are still significantly inferior to those of the Pb‐based analogs. This review summarizes the current progress and challenges in the preparation, morphological and photophysical properties of Sn‐based halide perovskites, and how these affect their PV performance. Although it can be argued that the Pb halide perovskite systems may remain the most sought after technology in the field of thin film perovskite PV, prospective research directions are suggested to advance the properties of Sn halide perovskite materials for improved device performance.

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Section: Photophysical Properties Of Sn Halide Perovskitesmentioning

confidence: 99%

Tin Halide Perovskites: Progress and Challenges

Yang

Igbari

Lou

et al. 2019

Advanced Energy Materials

155

121

View full text Add to dashboard Cite

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“…The crystal growth rate of tin halide perovskites can also be modulated by other interactions such as hydrogen bonds, hydrophilic‐hydrophobic self‐aggregation, intermolecular forces, and halide bonding. [ 7,37–39,141–147 ] For example, Meng et al. introduced hydrogen bonding interactions into tin halide perovskite by adding poly(vinyl alcohol) (PVA) into precursor solution ( Figure 11 a).…”

Section: Crystallization Modulationmentioning

confidence: 99%

“…The crystal growth rate of tin halide perovskites can also be modulated by other interactions such as hydrogen bonds, hydrophilic-hydrophobic self-aggregation, intermolecular forces, and halide bonding. [7,[37][38][39][141][142][143][144][145][146][147] For example, Meng et al introduced hydrogen bonding interactions into tin halide perovskite by adding poly(vinyl alcohol) (PVA) into precursor solution (Figure 11a). The hydrogen bonding interactions between hydroxyl group and iodide ion could not only retard the crystal growth to form dense and uniform films, but also suppress iodide ion migration on the grain boundary, which benefited the long-term stability for tin halide perovskite devices and obtained a PCE up to 8.9%.…”

Section: Other Additivesmentioning

confidence: 99%

Controlling the Crystallization Kinetics of Lead‐Free Tin Halide Perovskites for High Performance Green Photovoltaics

Wang

Gao

Yang

et al. 2021

Advanced Energy Materials

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currently certified 25.5%, [1][2][3][4][5] setting to rival even the commercial silicon solar cells. However, the extreme toxicity of lead (Pb) in those perovskites is an inescapable problem that becomes an obstacle on the road of large-scale fabrication and further commercialization. [6][7][8][9][10] The most effective way to address this issue is to use a less or non-toxic substitute element instead of Pb, such as tin (Sn), [11] bismuth (Bi), [12][13][14][15] germanium (Ge), [16][17] antimony (Sb), [18][19][20] and copper (Cu). [21][22] Among them, Sn

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“…The partial addition of Sn into the conventional perovskites (to form HPVKs) provided synergetic advantages: 1) stabilization of the Sn in its bivalent state, 2) reduction in the overall toxicity of the compound, and 3) bandgap tunability toward the ideal one. [ 93 ] For example, Ogomi et al [93b] partially substituted Pb with Sn for the first time and prepared several less toxic HPVKs (MASn x Pb (1− x ) I 3 ) with tunable bandgap (1.5–1.1 eV) (see Figure a,b). Due to the reduced bandgap, the optimized HPVK (MASn 0.5 Pb 0.5 I 3 ) demonstrated a redshift of 253 nm in the incident photon‐to‐electron conversion efficiency (IPCE) curve edge and reached as high as 1060 nm (see Figure 10c).…”

Section: Hpvksmentioning

confidence: 99%

Nontoxic and Less Toxic Hybrid Perovskites: a Synergistic Strategy for Sustainable Photovoltaic Devices

et al. 2021

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A research hotspot for the last decade, organometal‐halide perovskites are now showing their promise in numerous optoelectronic devices. With power conversion efficiency (PCE) greater than 25%, perovskite solar cells (PSCs) are approaching the status of popular monocrystalline silicon–based solar cells (SCs). However, the presence of a bioaccumulative lead (Pb) in these perovskite compounds hinders their scalability and commercialization. The endeavor on nontoxic alternatives has triggered a new field of perovskites where Pb has been successfully eliminated. Preliminary studies of photovoltaic (PV) devices based on Pb‐free perovskites have shown some promise; however, they failed to exhibit comparable performance and compositional stability. Therefore, to exploit together the advantages of high efficiency and lesser toxicity, combinations of Pb alternatives with each other as well as with conventional Pb are required in the perovskite framework to fabricate hybrid perovskites (HPVKs). The first part of this Review briefly discusses all possible Pb substitutes and their limitations in PV devices. Based on the Pb contents, the second part elaborates on the two different types of HPVKs (i.e., nontoxic and less toxic) and their progress in photovoltaics. The Review concludes with an outlook discussing current challenges in the way of HPVKs and prospective opportunities to assess their future progress.

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Metallic tin substitution of organic lead perovskite films for efficient solar cells

Abstract: Low-leaded perovskite solar cells are operated using inorganic active metal substitution of lesser active organometal halide perovskite.

Cited by 25 publications

References 59 publications

Tin Halide Perovskites: Progress and Challenges

Tin Halide Perovskites: Progress and Challenges

Controlling the Crystallization Kinetics of Lead‐Free Tin Halide Perovskites for High Performance Green Photovoltaics

Nontoxic and Less Toxic Hybrid Perovskites: a Synergistic Strategy for Sustainable Photovoltaic Devices

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