Controllable perovskite crystallization via platelet-like PbI2 films from water processing for efficient perovskite solar cells

Zhou, Shenghou; Zhang, Wenfeng; Lin, Puan; Tian, Liuwen; Jiang, Yutong; Du, Lin; Zhou, Xiangqing; Wen, Fang; Duan, Gongtao; Yu, Lang; Chen, Tao; Zhu, Mingshan; Huang, Yuelong

doi:10.1016/j.jallcom.2021.160900

Cited by 5 publications

(3 citation statements)

References 41 publications

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“…It can be observed that in both cases (and in intermediate annealings that are not shown) the thin films present a complete coating of the substrate, without the presence of pinholes, with a homogeneous morphology that corresponds to grains in shapes of flakes and interconnected threads that make a high specific surface area, which are properties that are highly desirable for application as a precursor material in the synthesis of perovskite thin films in solar cells. [ 12,33 ] Interestingly, the surface morphology is not affected by the annealing, because, for all the performed annealing treatments the morphology is significantly similar, which shows that the films are quite stable.…”

Section: Resultsmentioning

confidence: 95%

Structural, Optical, and Chemical Characteristics of High‐Quality PbI₂ Thin Films via Chemical Solution Deposition with Thermal Annealing

Solis-Mosquera,

Cabrera-German,

Santacruz-Ortega

et al. 2023

Physica Status Solidi (a)

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Lead iodide (PbI 2 ) thin films are interesting semiconductor materials arranged in quasi 2D layers, [1] that have an optical bandgap near the ultraviolet (E g = 2.4 eV) spectrum and are composed of atoms with a high atomic mass. [2,3] These characteristics of PbI 2 allow its use in diverse applications, [4][5][6][7][8] with a recent interest in large-area visible, X-ray, and γ-ray radiation detectors. [2,9] Additionally, PbI 2 thin films are excellent precursors in the chemical synthesis of lead halide perovskite CH 3 NH 3 PbI 3 (MAPI) thin films, [10][11][12] which are photovoltaic materials of great importance. However, whether PbI 2 can be used as a high-performance optoelectronic material or efficient chemical precursor, strongly depends on achieving favorable structural properties. [3,[12][13][14] Moreover, the understanding of how the different deposition conditions affect the multiple stacking conformations that the compact PbI 2 layers take [15] is challenging. Different structural configurations known as polytypes [16] can be achieved but are difficult to reproduce, [3] and can lead to diverse microstructures, [17][18][19] that in turn produce varying optical and electrical properties.Different polytypes can be obtained according to the annealing conditions [20] and the implemented synthesis methodology. [21] Diverse previous studies have reported the synthesis of PbI 2 employing thermal evaporation, physical vapor deposition, laser ablation, atomic layer deposition, spray pyrolysis, and spin-coating with favorable crystalline properties. [12][13][14]22,23] The literature shows that the most common polytype is the 2H, albeit the 4H and 12R polytypes have been reported [24,25] at annealing treatments of 150 and 170 °C, respectively. Achieving the 4H and 12R polytypes may improve the optoelectronic properties in large-area radiation sensors, as well as favoring the quality and stability of perovskite thin films. Thus, the use of PbI 2 thin films in such purposes requires the examination of the structural properties at specified synthesis parameters.Therefore, in this work, we explore the synthesis of PbI 2 thin films via chemical bath deposition (CBD), a technique that has not been extensively studied for the deposition of PbI 2 thin films, only few reports exist in the literature. [3,26] CBD, when done correctly, enables the deposition of uniform, homogeneous, and large-area thin films that are strongly adhered to almost any kind of substrate. This technique does not require complex infrastructure, ergo it is low cost and easy to implement, and has been proven successful for the synthesis of numerous metal iodide thin films. [27][28][29][30] However, achieving good-quality films is complicated, because it requires fine tuning of the chemical formulation (reaction solution), as shown by the work of Kariper [3] where the structure and optical properties of the PbI 2 thin films are significantly influenced by the pH of the reaction solution.

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Section: Resultsmentioning

confidence: 95%

Structural, Optical, and Chemical Characteristics of High‐Quality PbI₂ Thin Films via Chemical Solution Deposition with Thermal Annealing

Solis-Mosquera,

Cabrera-German,

Santacruz-Ortega

et al. 2023

Physica Status Solidi (a)

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“…Perovskite materials have unique and excellent photovoltaic properties, including high defect tolerance, adjustable band gap, and long exciton diffusion length [ 1 , 2 ]. Since perovskite materials were first used to prepare solar cells in 2009, their power conversion efficiency (PCE) has made continuous breakthroughs [ 3 ]. The highest PCE of perovskite solar cells (PSCs) has reached 25.7% [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Research Progress of Green Solvent in CsPbBr3 Perovskite Solar Cells

2023

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In optoelectronic applications, all-Brominated inorganic perovskite CsPbBr3 solar cells have received a great deal of attention because of their remarkable stability and simplicity of production. Most of the solvents used in CsPbBr3 perovskite solar cells are toxic, which primarily hinders the commercialization of the products. In this review, we introduce the crystal structure and fundamental properties of CsPbBr3 materials and the device structure of perovskite cells, summarize the research progress of green solvents for CsPbBr3 PSCs in recent years from mono-green solvent systems to all-green solvent systems, and discuss the approaches to improving the PCE of CsPbBr3 PSCs, intending to facilitate the sustainable development of CsPbBr3 perovskite solar cells. Finally, we survey the future of green solvents in the area of CsPbBr3 perovskite solar cells.

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“…Perovskite quantum dots (QDs) have attracted worldwide tremendous attention for applications in various fields, such as solar cells, photo detectors, light-emitting devices, lasers and bioimaging [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Compared with the volatile organic groups of the organic-inorganic hybrid counterparts, all-inorganic lead halide perovskites are relatively stability, and possess splendid properties such as high absorption coefficient, remarkable quantum yield, flexible multiple composition, tunable visible fluorescence (FL), and good color purity [16][17][18][19][20][21][22][23][24][25]. As the prominent representative of metal-halide perovskites family, Cs-Pb-Br all-inorganic analog has a variety of chemical composition and geometric structure, in which three-dimensional CsPbBr 3 QDs are proven to possess bright and tunable photoluminescence (PL) characteristics and zero-dimensional Cs 4 PbBr 6 QDs exhibit potential remarkable emission ability [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

All-inorganic perovskite quantum dots-based electrospun polyacrylonitrile fiber for ultra-sensitive trace-recording

Li¹,

Shen²,

Pun³

et al. 2021

Nanotechnology

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All-inorganic dual-phase CsPbBr3-Cs4PbBr6 quantum dots (CPB QDs)-based polyacrylonitrile (PAN) fiber synthesized by supersaturated recrystallization and electrospinning technique possesses characteristics of homogeneous morphology, high crystallinity and solution sensitivity. Under 365 nm laser excitation, CPB@PAN fiber exhibits surprising trace-recording capability attributing to the splash-enhanced fluorescence (FL) performance with a narrow-band emission at 477-515 nm. In the process of ethanol-anhydrous (EA) and water splashing, the CPB@PAN fiber presents conspicuous blue and green emission when contacting with EA and water, and maintains intense blue and green FL for more than 4 months. These experimental and theoretical findings provide a facile technology for the development of biological protection display, biotic detection and moisture-proof forewarning based on the trace-recording performance of CPB@PAN fiber.

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Controllable perovskite crystallization via platelet-like PbI2 films from water processing for efficient perovskite solar cells

Cited by 5 publications

References 41 publications

Structural, Optical, and Chemical Characteristics of High‐Quality PbI₂ Thin Films via Chemical Solution Deposition with Thermal Annealing

Structural, Optical, and Chemical Characteristics of High‐Quality PbI₂ Thin Films via Chemical Solution Deposition with Thermal Annealing

Research Progress of Green Solvent in CsPbBr3 Perovskite Solar Cells

All-inorganic perovskite quantum dots-based electrospun polyacrylonitrile fiber for ultra-sensitive trace-recording

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Controllable perovskite crystallization via platelet-like PbI2 films from water processing for efficient perovskite solar cells

Cited by 5 publications

References 41 publications

Structural, Optical, and Chemical Characteristics of High‐Quality PbI2 Thin Films via Chemical Solution Deposition with Thermal Annealing

Structural, Optical, and Chemical Characteristics of High‐Quality PbI2 Thin Films via Chemical Solution Deposition with Thermal Annealing

Research Progress of Green Solvent in CsPbBr3 Perovskite Solar Cells

All-inorganic perovskite quantum dots-based electrospun polyacrylonitrile fiber for ultra-sensitive trace-recording

Contact Info

Product

Resources

About

Structural, Optical, and Chemical Characteristics of High‐Quality PbI₂ Thin Films via Chemical Solution Deposition with Thermal Annealing

Structural, Optical, and Chemical Characteristics of High‐Quality PbI₂ Thin Films via Chemical Solution Deposition with Thermal Annealing