Progress in the preparation and application of CsPbX<sub>3</sub> perovskites

Pan, Yingwen; Zhang, Yaofang; Kang, Weimin; Deng, Nanping; Yan, Zirui; Sun, Wei; Kang, Xiaoying; Ni, Jian

doi:10.1039/d2ma00100d

Cited by 29 publications

(15 citation statements)

References 87 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All‐inorganic lead halide perovskites are emerging materials for optoelectronic applications, such as solar cells [ 1–4 ] and photodetectors. [ 5–7 ] In particular, inorganic halide perovskite nanocrystals (PNCs) have attracted significant attention owing to their unique and outstanding optical properties such as high quantum yield (QY), strong absorption, and widely tunable band gap energy [ 8–10 ] accompanied by inexpensive solution processing techniques.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Magnetic and Electric Field Dependent Charge Transfer in Perovskite/Graphene Field Effect Transistors

Cottam

Austin

Zhang

et al. 2022

Adv Elect Materials

View full text Add to dashboard Cite

unique and outstanding optical properties such as high quantum yield (QY), strong absorption, and widely tunable band gap energy [8][9][10] accompanied by inexpensive solution processing techniques. [11][12][13] These PNCs have been successfully used in photon detectors operational in the visible wavelength range with photoresponsivity, R > 10 5 A W −1 , [14,15] and could offer further opportunities for UV applications. [16,17] Amongst device structures of particular interest are hybrid field effect transistors (FETs) that combine single-layer graphene (SLG) with PNCs. The performance of these devices, such as their response time, is affected by the slow, >1 s, redistribution of charge between the graphene layer and PNCs under light and/or electrostatic gating, [18,19] leading to the accumulation of a large amount of charge in the PNCs (7 × 10 12 cm −2 [19] ). This phenomenon can induce a range of interesting physical phenomena, such as an optically induced Stark effect, [20] large hysteresis on the gate voltage dependence of the graphene resistance, [19] and enhancement of the photoresponsivity. [21,22] However, to fully exploit the potential of perovskite/graphene structures, a comprehensive understanding of their properties is still needed. High magnetic fields are invaluable for interrogating fundamental physical processes Stable all-inorganic CsPbX 3 perovskite nanocrystals (PNCs) with high optical yield can be used in combination with graphene as photon sensors with high responsivity (up to 10 6 A W −1 ) in the VIS-UV range. The performance of these perovskite/graphene field effect transistors (FET) is mediated by charge transfer processes at the perovskite -graphene interface. Here, the effects of high electric (up to 3000 kV cm −1 ) and magnetic (up to 60 T) fields applied perpendicular to the graphene plane on the charge transfer are reported. The authors demonstrate electric-and magnetic-field dependent charge transfer and a slow (>100 s) charge dynamics. Magneto-transport experiments in constant (≈0.005 T s −1 ) and pulsed (≈1000 T s −1 ) magnetic fields reveal pronounced hysteresis effects in the transfer characteristics of the FET. A magnetic time is used to explain and model differences in device behavior under fast (pulsed) and slowly (continuous) changing magnetic fields. The understanding of the dynamics of the charge transfer in perovskite/graphene heterostructures developed here is relevant for exploitation of these hybrid systems in electronics and optoelectronics, including ultrasensitive photon detectors and FETs for metrology.

show abstract

Section: Introductionmentioning

confidence: 99%

“…All-inorganic lead halide perovskites are emerging materials for optoelectronic applications, such as solar cells [1][2][3][4] and photodetectors. [5][6][7] In particular, inorganic halide perovskite nanocrystals (PNCs) have attracted significant attention owing to their in low-dimensional materials.…”

Section: Introductionmentioning

confidence: 99%

Magnetic and Electric Field Dependent Charge Transfer in Perovskite/Graphene Field Effect Transistors

Cottam

Austin

Zhang

et al. 2022

Adv Elect Materials

View full text Add to dashboard Cite

show abstract

“…Lead-halide perovskites (APbX 3 ) have been extensively studied due to their excellent optoelectronic properties and many potential applications, including photovoltaics, lighting, and X-ray detection. − Recently, attention has turned to the possibility that elpasolites (or double perovskites, A 2 B′B″X 6 , where B′ = M + , B″ = M 3+ ) may serve as promising lead-free alternatives to the lead-halide perovskites . Although elpasolites generally do not exhibit the excellent emissive properties of certain lead-halide perovskites, some do show long carrier lifetimes and broad absorption, making them potentially suitable for applications in photovoltaics. − Some elpasolites also exhibit superior thermal and water stability compared to lead-halide perovskites, making them potentially attractive for devices that experience high temperatures under standard operation. − Numerous theoretical studies of elpasolites have predicted that iodide elpasolites, in particular, should exhibit the most suitable band gaps for photovoltaic applications. ,− …”

Section: Introductionmentioning

confidence: 99%

Structure and Stability of the Iodide Elpasolite, Cs₂AgBiI₆

et al. 2023

View full text Add to dashboard Cite

Iodide elpasolites (or double perovskites, A2B′B″I6, B′ = M+, B″ = M3+) are predicted to be promising alternatives to lead-based perovskite semiconductors for photovoltaic and optoelectronic applications, but no iodide elpasolite has ever been definitively prepared or structurally characterized. Iodide elpasolites are widely predicted to be unstable due to favorable decomposition to the competing A3B2I9 (B = M3+) phase. Here, we report the results of synchrotron X-ray diffraction (XRD) and X-ray total scattering measurements on putative Cs2AgBiI6 nanocrystals made via anion exchange from parent Cs2AgBiBr6 nanocrystals. Rietveld refinement of XRD and pair distribution functions (PDF) data shows that these nanocrystals indeed exhibit a tetragonal (I4̅m) elpasolite structure, making them the first example of a structurally characterized iodide elpasolite. A series of experiments probing structural relaxation and the effects of surface ligation or grain size all point to the critical role of surface free energy in stabilizing the iodide elpasolite phase in these nanocrystals.

show abstract

“…Many alternative approaches toward perovskite QD synthesis were recently reported in the literature. 12 The alternative methods for perovskite QDs preparation could be classied as follows: microwave-assisted, 13,14 solvothermal, 15 sonochemical, 16,17 and precipitation-based methods. [18][19][20][21] Among all these methods, the hot-injection synthesis approach, initially reported by Kovalenko et al, 11 remains the most used.…”

Section: Introductionmentioning

confidence: 99%

Real-time observation of ion exchange dynamics during surface treatment of all-inorganic perovskite quantum dots with Zn-halogenide complexes for color tuning and enhanced quantum efficiency

Ezerskyte,

Malikenas,

Sakirzanovas

et al. 2023

RSC Adv.

View full text Add to dashboard Cite

show abstract

Progress in the preparation and application of CsPbX₃ perovskites

Abstract: In recent years, organic-inorganic metal halide (OIH) perovskites have become a popular material of increasing interest. Due to the presence of organic cations, OIH perovskites suffer from chemical instability and...

Cited by 29 publications

References 87 publications

Magnetic and Electric Field Dependent Charge Transfer in Perovskite/Graphene Field Effect Transistors

Magnetic and Electric Field Dependent Charge Transfer in Perovskite/Graphene Field Effect Transistors

Structure and Stability of the Iodide Elpasolite, Cs₂AgBiI₆

Real-time observation of ion exchange dynamics during surface treatment of all-inorganic perovskite quantum dots with Zn-halogenide complexes for color tuning and enhanced quantum efficiency

Contact Info

Product

Resources

About

Progress in the preparation and application of CsPbX3 perovskites

Abstract: In recent years, organic-inorganic metal halide (OIH) perovskites have become a popular material of increasing interest. Due to the presence of organic cations, OIH perovskites suffer from chemical instability and...

Cited by 29 publications

References 87 publications

Magnetic and Electric Field Dependent Charge Transfer in Perovskite/Graphene Field Effect Transistors

Magnetic and Electric Field Dependent Charge Transfer in Perovskite/Graphene Field Effect Transistors

Structure and Stability of the Iodide Elpasolite, Cs2AgBiI6

Real-time observation of ion exchange dynamics during surface treatment of all-inorganic perovskite quantum dots with Zn-halogenide complexes for color tuning and enhanced quantum efficiency

Contact Info

Product

Resources

About

Progress in the preparation and application of CsPbX₃ perovskites

Structure and Stability of the Iodide Elpasolite, Cs₂AgBiI₆