Preparation of efficient inverted tin-based perovskite solar cells <i>via</i> the bidentate coordination effect of 8-hydroxyquinoline

Lin, Zhuojia; Liu, Cong; Liu, Gengling; Yang, Jia; Duan, Xidong; Tan, Licheng; Chen, Yiwang

doi:10.1039/d0cc01106a

Cited by 66 publications

(58 citation statements)

References 23 publications

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“…Moreover, a series of small molecules with electronegative heteroatoms (e.g., N and O atoms) that could form stable coordination with the Sn 2+ cations, such as piperazine, 8‐hydroxyquinoline (8‐HQ), and trimethylamine (TMA), were developed to further improve the efficiency and stability of SnF 2 ‐contained tin PSCs. [ 62-64 ]…”

Section: Antioxidant Additivesmentioning

confidence: 99%

Additive Engineering toward High‐Performance Tin Perovskite Solar Cells

Cui

Liu

et al. 2021

Solar RRL

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Perovskite solar cells (PSCs) have emerged as one of the third‐generation photovoltaic technologies. However, the toxicity issue of the lead element in perovskite absorbers hinders their large‐scale production. Thus, exploiting lead‐free perovskite materials becomes an important solution to overcome this challenge. Among all the candidates, tin perovskites have advanced rapidly in recent years due to their low toxicity, favorable bandgap, and high carrier mobility. After a few years of development, the highest power conversion efficiency (PCE) of tin PSCs has exceeded 13%, which is mainly attributed to the breakthroughs arising from additive engineering of the Sn perovskite layer. Herein, the role of additive engineering in the research community of tin PSCs is emphasized. First, the crystal structure, electronic characteristics, and the chemical instability of Sn perovskites are introduced. Next, additives used for stabilizing the Sn2+ components, purifying SnI2 sources, and improving the crystal quality of perovskite films are discussed in detail. Finally, challenges and perspectives are laid out to advance the properties of tin halide perovskites for further improving the device efficiency and stability.

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Section: Antioxidant Additivesmentioning

confidence: 99%

Additive Engineering toward High‐Performance Tin Perovskite Solar Cells

Cui

Liu

et al. 2021

Solar RRL

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“…[ 183 ] 8‐hydroxyquinoline (8‐HQ) is the sole reported bidentate ligand among introduced antioxidants (Figure 19A). [ 184 ] The interaction is confirmed by the diminishment of OH signals in IR and 1 H NMR spectra (Figure 19B and C). The introduction of 8‐HQ improved the stability of perovskite film and (Figure 19D) yielded moderate efficiency of 7.15%.…”

Section: Additive Engineering Of Sn‐based Pscsmentioning

confidence: 86%

“…Reproduced with permission. [ 184 ] Copyright 2020, Royal Society of Chemistry. E,) Schematic illustration of antioxidation and defect passivation at grain surfaces (including film surface and grain boundary) of mixed Pb‐Sn perovskite films enabled by FSA.…”

Section: Additive Engineering Of Sn‐based Pscsmentioning

confidence: 99%

Recent progress toward highly efficient tin‐based perovskite (ASnX3) solar cells

2021

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Recently, lead halide perovskites have attracted great attention in photovoltaic field because of high power conversion efficiency. However, the toxicity of lead in perovskite can result in environment issues, which are the major challenge for commercial application. In this context, environmentally friendly lead‐free perovskite alternatives are highly desired. Bearing excellent photophysical and electronic properties, tin‐perovskites (ASnX3) are the most promising alternative. In reality, extensive efforts have been committed to the development of Sn‐based perovskite solar cells. In this review, we summarized the theoretical fundamentals of Sn‐based perovskites, including lattice, phases, molecular orbital, redox property, and defects. Then varieties of tactics to improve devices performance were detailed reviewed. Finally, perspectives on further research directions in improving Sn‐based solar cells performance are presented.

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“…A bidentate Lewis base 8‐hydroxyquinoline was introduced in the perovskite precursor FASnI 3 to increase the stability of the intermediate phase in a recent study. [ 73 ] The incorporation of 8‐hydroxyquinoline successfully stabilized the perovskite precursor by forming a complex with SnI 2 using the two donating atoms (nitrogen and oxygen) present in 8‐hydroxyquinoline. The resultant FASnI 3 film showed high crystallinity, with lower cracks inhibiting the oxidation of Sn 2+ to Sn 4+ , and producing a PCE of 7.15 % in the respective PSC.…”

Section: The Influence Of Lewis Base Additives On Perovskite Solar Pementioning

confidence: 99%

High‐Efficiency Tin Halide Perovskite Solar Cells: The Chemistry of Tin (II) Compounds and Their Interaction with Lewis Base Additives during Perovskite Film Formation

et al. 2020

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Mixed halide perovskite compounds with the formula AMX 3 (A þ ¼ CH 3 NH 3 (MA)/HC(NH 2) 2 (FA)/Cs/Rb; M 2þ ¼ Pb, Sn; X À ¼ Cl, Br, I) have emerged as a potential material for fabrication of next-generation solar cells with high photovoltaic performance. [1] A recent study has shown that perovskite solar cells (PSCs) can be fabricated with a high power conversion efficiency (PCE) of 25.5% with Pb as the divalent metal in the compound. [2] Unfortunately, the presence of toxic Pb remains questionable for largescale production. Fortunately, Sn, which is located above Pb in group IV of the periodic table of elements, is a promising candidate for harmless photovoltaic applications. Compared to Pb, Sn is less toxic and can form perovskite compounds with various cations. Sn-based perovskite compounds possess fascinating properties for solar cell applications, such as a narrower bandgap, a lower exciton binding energy, a high charge carrier mobility, and a slightly smaller radius than Pb 2þ , which allows for the replacement of Pb by Sn while retaining the perovskite structure. Notably, the Sn-perovskite materials possess an optimal bandgap for solar cell applications between 1.1 and 1.4 eV and can be decomposed to nontoxic materials such as Sn II oxide (SnO 2). [3] However, fabricating high-quality Sn-based perovskite films is still unmanageable due to the lack of a basic understanding of the Sn II compounds. Such lacking hinders the potential realization of the corresponding film properties, such as surface morphology, pinhole-free layer formation, and low crystallinity. Until now, the most successful of the Sn-PSCs have been fabricated with FASnI 3 as the absorber layer.

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Preparation of efficient inverted tin-based perovskite solar cells via the bidentate coordination effect of 8-hydroxyquinoline

Abstract: High-performance and stable tin-based perovskite solar cells have been prepared via the bidentate coordination effect of 8-hydroxyquinoline.

Cited by 66 publications

References 23 publications

Additive Engineering toward High‐Performance Tin Perovskite Solar Cells

Additive Engineering toward High‐Performance Tin Perovskite Solar Cells

Recent progress toward highly efficient tin‐based perovskite (ASnX3) solar cells

High‐Efficiency Tin Halide Perovskite Solar Cells: The Chemistry of Tin (II) Compounds and Their Interaction with Lewis Base Additives during Perovskite Film Formation

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