Structure Tunable Organic–Inorganic Bismuth Halides for an Enhanced Two-Dimensional Lead-Free Light-Harvesting Material

Li, Mu-Qing; Hu, Yue-Qiao; Bi, Le-Yu; Zhang, Hao-Lan; Wang, Yan Yan; Zheng, Yan‐Zhen

doi:10.1021/acs.chemmater.7b01017

Cited by 70 publications

(52 citation statements)

References 34 publications

(39 reference statements)

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“…In this compound, a unique 2D honeycomb-like [Bi 2 I 7 Cl 2 ] n 3n− layers are isolated by TMP (Figure 6f). Furthermore, no material decomposition was observed after stored in air for 1 week, showing superior stability over commonly used APbI 3 [75].…”

Section: Photodetectors Based On 2d Layered Perovskitesmentioning

confidence: 84%

See 1 more Smart Citation

Two-Dimensional Halide Perovskites for Emerging New- Generation Photodetectors

Tang¹,

Cao²,

Chi³

2018

Two-Dimensional Materials for Photodetector

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Compared to their conventional three-dimensional (3D) counterparts, two-dimensional (2D) halide perovskites have attracted more interests recently in a variety of areas related to optoelectronics because of their unique structural characteristics and enhanced performances. In general, there are two distinct types of 2D halide perovskites. One represents those perovskites with an intrinsic layered crystal structure (i.e. MX 6 layers, M = metal and X = Cl, Br, I), the other defines the perovskites with a 2D nanostructured morphology such as nanoplatelets and nanosheets. Recent studies have shown that 2D halide perovskites hold promising potential for the development of new-generation photodetectors, mainly arising from their highly efficient photoluminescence and absorbance, color tunability in the visible-light range and relatively high stability. In this chapter, we present the summary and highlights of latest researches on these two types of 2D halide perovskites for developing photodetectors, with an emphasis on synthesis methods, structural characterization, optoelectronic properties, and theoretical analysis and simulations. We also discuss the current challenging issues and future perspective. We hope this chapter would add new elements for understanding halide perovskite-based 2D materials and for developing their more efficient optoelectronic devices.

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Section: Photodetectors Based On 2d Layered Perovskitesmentioning

confidence: 84%

“…More recently, the first 2D and mixed-halide anion of bismuth was synthesized by Li et al via solution-processed method [75]. In this compound, a unique 2D honeycomb-like [Bi 2 I 7 Cl 2 ] n 3n− layers are isolated by TMP (Figure 6f).…”

Section: Photodetectors Based On 2d Layered Perovskitesmentioning

confidence: 99%

Two-Dimensional Halide Perovskites for Emerging New- Generation Photodetectors

Tang¹,

Cao²,

Chi³

2018

Two-Dimensional Materials for Photodetector

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“…[69][70][71][72] Conversely,C s 3 Bi 2 Br 9 and MA 3 Bi 2 Br 9 NCs both form a2 Ds tructure,w hile MA 3 Bi 2 Cl 9 possess a1 Ds tructure. [73][74][75] Crystal structure evolutions of parent 3D structure to 2D MA 3 Bi 2 Br 9 and 1D MA 3 Bi 2 Cl 9 ,r espectively,a re shown in Figure 3b,i llustrating how MA 3 Bi 2 Br 9 can be simply viewed as cutting along the (111) direction of 3D parent perovskite structure,with every third Bi layer removed, thereby forming the 2D structure.In contrast, MA 3 Bi 2 Cl 9 is formed by removing every third Bi layer along the (110) direction of parent 3D structure,and, to keep charge balance,t he (001) planes also need to be sliced leaving two-thirds of the Bi atoms,r esulting in the final 1D structure.Similarly,the crystal structure of the Cs 3 Sb 2 Br 9 NCs exhibit 2D layered structures,c onsistent with its bulk material, as illustrated in Figure 4a. [76] A 3 Sb 2 I 9 (A = MA or Cs) film crystallizes in the 0D dimer phase,b ut Cl incorporation can induce aphase transformation from the 0D dimer phase to the 2D layered phase ( Figure 4b).…”

Section: Neighboring Elements Of Pbmentioning

confidence: 99%

Lead‐Free Halide Perovskite Nanocrystals: Crystal Structures, Synthesis, Stabilities, and Optical Properties

et al. 2019

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In recent years, there have been rapid advances in the synthesis of lead halide perovskite nanocrystals (NCs) for use in solar cells, light emitting diodes, lasers, and photodetectors. These compounds have a set of intriguing optical, excitonic, and charge transport properties, including outstanding photoluminescence quantum yield (PLQY) and tunable optical band gap. However, the necessary inclusion of lead, a toxic element, raises a critical concern for future commercial development. To address the toxicity issue, intense recent research effort has been devoted to developing lead‐free halide perovskite (LFHP) NCs. In this Review, we present a comprehensive overview of currently explored LFHP NCs with an emphasis on their crystal structures, synthesis, optical properties, and environmental stabilities (e.g., UV, heat, and moisture resistance). In addition, strategies for enhancing optical properties and stabilities of LFHP NCs as well as the state‐of‐the‐art applications are discussed. With the perspective of their properties and current challenges, we provide an outlook for future directions in this rapidly evolving field to achieve high‐quality LFHP NCs for a broader range of fundamental research and practical applications.

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“…[69][70][71][72] Umgekehrt bilden Cs 3 Bi 2 Br 9 -und MA 3 Bi 2 Br 9 -NCs beide eine 2D-Struktur,w ährend MA 3 Bi 2 Cl 9 eine 1D-Struktur besitzt. [73][74][75] Die Entwicklung der Kristallstruktur von 2D MA 3 Bi 2 Br 9 bzw.1 DM A 3 Bi 2 Cl 9 aus der ursprünglichen 3D-Struktur ist in Abbildung 3b dargestellt und veranschaulicht, wie MA 3 Bi 2 Br 9 einfach als Schnitt entlang der (111)-Richtung der ursprünglichen 3D-Perowskitstruktur betrachtet werden kann, wobei jede dritte Bi-Schicht entfernt wird und so die 2D-Struktur bildet. Im Gegensatz dazu wird MA 3 Bi 2 Cl 9 gebildet, indem jede dritte Bi-Schicht entlang der (110)-Richtung der ursprünglichen 3D-Struktur entfernt wird;u md en Ladungsausgleich aufrechtzuerhalten, müssen auch die (001)-Ebenen geschnitten werden, wobei 2/3 der Bi-Atome übrig bleiben, was zur endgültigen 1D-Struktur führt.…”

Section: Gruppe-14-elementeunclassified

Bleifreie Halogenid‐Perowskit‐Nanokristalle: Kristallstrukturen, Synthese, Stabilitäten und optische Eigenschaften

Fan

Biesold‐McGee

et al. 2019

Angewandte Chemie

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In den letzten Jahren gab es rasante Fortschritte bei der Synthese von Bleihalogenid‐Perowskit‐Nanokristallen (NCs) für den Einsatz in Solarzellen, Leuchtdioden, Lasern und Photodetektoren. Sie besitzen eine Reihe faszinierender optischer, excitonischer und Ladungstransporteigenschaften, einschließlich hervorragender Photolumineszenz‐Quantenausbeuten (PLQY) und abstimmbaren optischen Bandlücken. Die notwendige Verwendung von Blei, einem toxischen Element, gibt jedoch Anlass zu ernsthafter Besorgnis über die zukünftige kommerzielle Entwicklung. Um das Problem der Toxizität zu lösen, wurden in jüngster Zeit intensive Forschungsarbeiten zur Entwicklung bleifreier Halogenid‐Perowskit(LFHP)‐NCs durchgeführt. In diesem Aufsatz geben wir einen Überblick über die derzeit erforschten LFHP‐NCs mit den Schwerpunkten Kristallstruktur, Synthese, optische Eigenschaften und Umgebungsstabilität (z. B. UV‐, Wärme‐ und Feuchtigkeitsbeständigkeit). Darüber hinaus werden Strategien zur Verbesserung der optischen Eigenschaften und Stabilitäten von LFHP‐NCs sowie deren neueste Anwendungen diskutiert.

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Structure Tunable Organic–Inorganic Bismuth Halides for an Enhanced Two-Dimensional Lead-Free Light-Harvesting Material

Cited by 70 publications

References 34 publications

Two-Dimensional Halide Perovskites for Emerging New- Generation Photodetectors

Two-Dimensional Halide Perovskites for Emerging New- Generation Photodetectors

Lead‐Free Halide Perovskite Nanocrystals: Crystal Structures, Synthesis, Stabilities, and Optical Properties

Bleifreie Halogenid‐Perowskit‐Nanokristalle: Kristallstrukturen, Synthese, Stabilitäten und optische Eigenschaften

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