Utilization of coordinating green solvents for high quality methylammonium bismuth iodide thin films for photovoltaic applications

Mutlu, Adem; Yeşil, Tamer; Zafer, Ceylan

doi:10.1016/j.orgel.2021.106191

Cited by 3 publications

(2 citation statements)

References 80 publications

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“…BiI 3 is an n-type semiconductor with favorable optoelectronic properties, such as a high absorption coefficient in the visible region (10 5 cm –1 ), near optimal band gap for visible light harvesting (∼1.7 eV), good electron mobility (250 cm 2 /(V s)), and charge carrier lifetime (∼1.5 ns) . Consequently, there have been numerous reports on BiI 3 solar cells as an active (absorber) layer, − and functional device interlayer, as well as being used for both single-crystal − and thin-film photodetection devices. , Furthermore, BiI 3 thin films are also used as a template for a range of other bismuth-based technologies. ,,− …”

Section: Introductionmentioning

confidence: 99%

Solvent Dopant-Regulated Grain Formation for Bismuth Iodide Thin-Film Photodetectors

Farooq,

Krishnamurthi,

Walia

et al. 2023

ACS Appl. Nano Mater.

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Simple solution-based processes to generate pinhole-free bismuth iodide (BiI 3 ) thin films with large, interconnected crystal grains have remained elusive. Here, a survey of the solvent systems for BiI 3 is conducted. Using a novel binary solvent doping approach to carefully regulate the crystallization kinetics, we generate high-quality BiI 3 thin films. Our method circumvents the current requirement for unreliable postprocessing techniques such as solvent vapor annealing or antisolvent dripping. Investigations reveal that 2-methoxyethanol doped with small amounts of N-methyl-2-pyrrolidone (NMP) is the ideal combination of parent and dopant solvent providing high vapor pressure and the intermediate coordination strength necessary to successfully achieve large grain formation in a single step. To evaluate optoelectronic performance, we integrated our optimized thin films into lithographically patterned lateral photodetectors (PDs). Our PD devices show fast millisecond response times, record responsivities of ∼1.61 A/W at moderate device bias (5 V), and excellent sensitivity, with detectivity reaching 1.9 × 10 12 cm Hz 1/2 W −1 (Jones). The high-quality BiI 3 semiconductor thin films outlined here, coupled with their ease of fabrication, enhance the development of BiI 3 optoelectronic devices and also serve as excellent template films for the fabrication of related bismuth perovskite materials.

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Section: Introductionmentioning

confidence: 99%

Solvent Dopant-Regulated Grain Formation for Bismuth Iodide Thin-Film Photodetectors

Farooq,

Krishnamurthi,

Walia

et al. 2023

ACS Appl. Nano Mater.

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“…Several processing techniques have been proposed as effective methods for controlling the quality of perovskite layers, including solvent treatment methods, annealing methods [13] using temperature and humidity to form crystals, controlling the proportion of perovskite solution, moisture-assisted growth, additives, and hot spin-coating [14][15][16]. Moreover, the dependence of the morphological and optical properties on the deposition method used to prepare perovskite films has been studied.…”

Section: Introductionmentioning

confidence: 99%

Solvent Effects on the Structural and Optical Properties of MAPbI3 Perovskite Thin Film for Photovoltaic Active Layer

et al. 2022

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Controlling the crystallinity, homogeneity, and surface morphology is an efficient method of enhancing the perovskite layer. These improvements contribute toward the optimization of perovskite film morphology for its use in high-performance photovoltaic applications. Here, different solvents will be used in order to process the perovskite precursor, to improve the interfacial contacts through generating a smooth film and uniform crystal domains with large grains. The effect that the solvent has on the optical and structural properties of spin-coated methyl ammonium lead iodide (MAPbI3) perovskite thin films prepared using a single-step method was systematically investigated. The spin-coating parameters and precursor concentrations of MAI and PbI2 were optimized to produce uniform thin films using the different solvents N, N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO), and γ-butyrolactone (GBL). The effect that the solvent has on the morphology of the MAPbI3 films was examined to determine how the materials can be structurally altered to make them highly efficient for use in perovskite hybrid photovoltaic applications. Scanning electron microscopy (SEM) and X-ray diffractometry (XRD) results show that the synthesized MAPbI3 films prepared using DMSO, DMF, and GBL exhibit the best crystallinity and optical characteristics (photoluminescence (PL)), respectively, of the prepared films. The optical properties resulting from the noticeable improvement PL of the films can be clearly correlated with their crystallinity, depending on the solvents used in their preparation. The film prepared in DMSO shows the highest transmittance and the highest bandgap energy of the prepared films.

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Simple approach for crystallizing growth of MAPbI3 perovskite nanorod without thermal annealing for Next-Generation optoelectronic applications

Qaid¹,

Ghaithan²,

Aldwayyan³

2023

Materials Chemistry and Physics

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Utilization of coordinating green solvents for high quality methylammonium bismuth iodide thin films for photovoltaic applications

Cited by 3 publications

References 80 publications

Solvent Dopant-Regulated Grain Formation for Bismuth Iodide Thin-Film Photodetectors

Solvent Dopant-Regulated Grain Formation for Bismuth Iodide Thin-Film Photodetectors

Solvent Effects on the Structural and Optical Properties of MAPbI3 Perovskite Thin Film for Photovoltaic Active Layer

Simple approach for crystallizing growth of MAPbI3 perovskite nanorod without thermal annealing for Next-Generation optoelectronic applications

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