Solvent-free and large area compatible deposition of methylammonium lead bromide perovskite by close space sublimation and its application in PIN diodes

Higgins, Marissa; Reyes-Banda, Martin Gregorio; Martínez-Falomir, G.G.; Bouanani, Lidia El; Murillo, Bayron L.; Chávez-Urbiola, I.R.; Pintor‐Monroy, Maria Isabel; Ely, Fernando; Mathew, Xavier; Quevedo‐Lopez, Manuel

doi:10.1016/j.tsf.2019.137585

Cited by 4 publications

(7 citation statements)

References 46 publications

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“…Previous studies have shown perovskite single crystals (2–3 mm) detecting gammas. , Our simulation calculated the penetration depth of 1.4 MeV alphas in MAPbBr 3 to be 7 μm. Then, the perovskite thickness needed to absorb 100% of alphas from the 10 B reaction can be as thin as 7 μm . The advantage of the reduced perovskite thickness is that fewer gammas will be detected without compromising neutron detection.…”

Section: Resultsmentioning

confidence: 99%

“…Then, the perovskite thickness needed to absorb 100% of alphas from the 10 B reaction can be as thin as 7 μm. 44 The advantage of the reduced perovskite thickness is that fewer gammas will be detected without compromising neutron detection. Figure S5 shows that if the perovskite thickness is reduced from 800 to 100 μm, the total number of counts from a 137 Cs gamma source decreases from ∼2 × 10 5 to ∼3 × 10 4 , almost 1 order of magnitude.…”

Section: Resultsmentioning

confidence: 99%

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Solid-State Neutron Detection Based on Methylammonium Lead Bromide Perovskite Single Crystals

Bouanani

Keating

Ávila-Avendaño

et al. 2021

ACS Appl. Mater. Interfaces

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Perovskite-based semiconductors, such as methylammonium and cesium lead halides (MPbX3: M = CH3NH3 + or Cs+; X = I–, Br–, or Cl–), have attracted immense attention for several applications, including radiation detection, due to their excellent electronic and optical properties.1,2,3,4,5,6 In addition, the combination of perovskites with other materials enables unique device structures. For example, robust and reliable diodes result when combined with metal oxide semiconductors. This device can be used for detection of nonionizing and ionizing radiation. In this paper, we report a unique perovskite single-crystal-based neutron detector using a heterojunction diode based on single-crystal MAPbBr3 and gallium oxide (Ga2O3) thin film. The MAPbBr3/Ga2O3 diodes demonstrate a leakage current of ∼7 × 10–10 A/mm2, an on/off ratio of ∼102, an ideality factor of 1.41, and minimal hysteresis that enables alpha particle, gamma-ray, and neutron detection at a bias as low as (−5 V). Gamma discrimination is further improved by 85% by optimizing the thickness of the perovskite single crystal. The MAPbBr3/Ga2O3 diodes also demonstrate a neutron detection efficiency of ∼3.92% when combined with a 10B neutron conversion layer.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Solid-State Neutron Detection Based on Methylammonium Lead Bromide Perovskite Single Crystals

Bouanani

Keating

Ávila-Avendaño

et al. 2021

ACS Appl. Mater. Interfaces

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“…Both TiO 2 and NiO have been explored for several MAPbX 3 - and CsPbX 3 -based devices, although independently and usually not evaporated. 38 In this case, NiO was deposited by reactive magnetron sputtering on top of ITO, controlling the resistivity of the films by controlling the amount of oxygen during deposition. This approach to obtain NiO films has been reported before.…”

Section: Resultsmentioning

confidence: 99%

“…MAPbX3 and CsPbX3 devices: mesoporous or compact TiO2 as ETL, commonly deposited by spin coating, 3,17,22,30 and NiO as HTL, mainly deposited by magnetron sputtering or pulsed laser deposition and utilized in inverted devices; 38,39,40 regardless, the implementation of both TiO2 and NiO in the same structure is not common. In this paper, we evaluate the deposition of CsPbI3 by thermal evaporation in a co-evaporation approach, offering good thickness control and reproducibility.…”

Section: Introductionmentioning

confidence: 99%

“… 3 , 5 , 7 , 37 The application of organic transport layers is limiting the advantages of using an inorganic perovskite. In the case of inorganic transport layers, two main materials have been explored for both MAPbX 3 and CsPbX 3 devices: mesoporous or compact TiO 2 as an ETL, commonly deposited by spin coating, 3 , 17 , 22 , 30 and NiO as an HTL, mainly deposited by magnetron sputtering or pulsed laser deposition and utilized in inverted devices; 38 − 40 regardless, the implementation of both TiO 2 and NiO in the same structure is not common. In this paper, we evaluate the deposition of CsPbI 3 by thermal evaporation in a co-evaporation approach, offering good thickness control and reproducibility.…”

Section: Introductionmentioning

confidence: 99%

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All-Evaporated, All-Inorganic CsPbI₃ Perovskite-Based Devices for Broad-Band Photodetector and Solar Cell Applications

Pintor‐Monroy

Goldberg

Elkhouly

et al. 2021

ACS Appl. Electron. Mater.

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Following the rapid rise of organic metal halide perovskites towards commercial application in thin film solar cells, inorganic alternatives attracted great interest with their potential of longer device lifetime due to the stability improvement under elevated temperatures and moisture ingress. Among them, cesium lead iodide (CsPbI3) has gained significant attention due to similar electronic and optical properties to methylammonium lead iodide (MAPbI3), with a band gap of 1.7 eV, high absorption coefficient and large diffusion length, while also offering the advantage of being completely inorganic, providing a higher thermal stability and preventing material degradation. On a device level however, it seems also essential to replace organic transport layers by inorganic counterparts to further prevent degradation. In addition, devices are mostly fabricated by spin coating, limiting their reproducibility and scalability; in this case, exploring all-evaporated devices allows to improve the quality of the layers and to increase their reproducibility. In this work, we focus on the deposition of CsPbI3 by CsI and PbI2 co-evaporation. We fabricate devices with an allinorganic, all-evaporated structure, employing NiO and TiO2 as transport layers, and evaluate these devices for both photodetector and solar cell applications. As a photodetector, low leakage current, high EQE and detectivity, and fast rise and decay times were obtained; while as a solar cell, acceptable efficiencies were achieved. These all-inorganic, all-evaporated devices represent one step forward towards higher stability and reproducibility, while enabling large area-compatibility and easier integration with other circuitry and, in future, the possible commercialization of perovskite-based technology.

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Vapor deposition of metal halide perovskite thin films: Process control strategies to shape layer properties

et al. 2021

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Vapor-based processes are particularly promising to deposit the perovskite thin film absorber of solar cells. These deposition methods are up-scalable, involve a controlled solvent-free environment, have the ability to conformally coat rough substrates, involve soft, low-energy deposition conditions, are compatible with shadow masks for patterning, and are already widely deployed at the industrial level. Still, solar cells featuring layers processed with these methods have not yet reached the same performance as their solution-processed counterparts, in part, due the complexity of controlling the sublimation of the organic precursors. This Research Update will discuss the different vapor-based deposition processes that have been reported to deposit perovskite thin films and will discuss reaction chamber designs that provide an enhanced control over the deposition process. The second part of this Research Update will then link experimental observations regarding layer properties depending on process conditions to theoretical concepts describing the sublimation and condensation of precursors and the growth of the perovskite thin film.

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Solvent-free and large area compatible deposition of methylammonium lead bromide perovskite by close space sublimation and its application in PIN diodes

Cited by 4 publications

References 46 publications

Solid-State Neutron Detection Based on Methylammonium Lead Bromide Perovskite Single Crystals

Solid-State Neutron Detection Based on Methylammonium Lead Bromide Perovskite Single Crystals

All-Evaporated, All-Inorganic CsPbI₃ Perovskite-Based Devices for Broad-Band Photodetector and Solar Cell Applications

Vapor deposition of metal halide perovskite thin films: Process control strategies to shape layer properties

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Solvent-free and large area compatible deposition of methylammonium lead bromide perovskite by close space sublimation and its application in PIN diodes

Cited by 4 publications

References 46 publications

Solid-State Neutron Detection Based on Methylammonium Lead Bromide Perovskite Single Crystals

Solid-State Neutron Detection Based on Methylammonium Lead Bromide Perovskite Single Crystals

All-Evaporated, All-Inorganic CsPbI3 Perovskite-Based Devices for Broad-Band Photodetector and Solar Cell Applications

Vapor deposition of metal halide perovskite thin films: Process control strategies to shape layer properties

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Product

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All-Evaporated, All-Inorganic CsPbI₃ Perovskite-Based Devices for Broad-Band Photodetector and Solar Cell Applications