Direct deposition strategy for highly ordered inorganic organic perovskite thin films and their optoelectronic applications

Ahmad, Shahab; Hanmandlu, Chintam; Kanaujia, Pawan K.; Prakash, G. Vijaya

doi:10.1364/ome.4.001313

Cited by 49 publications

(42 citation statements)

References 38 publications

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“…9a. 93,97,[133][134][135][136] Longo et al 93 have synthesized CH 3 NH 3 PbI 3 perovskite lms by using the ash evaporation technique and showed that smooth surface morphology was obtained with a surface RMS roughness of $17.6 nm, Fig. 9b.…”

Section: Flash Evaporation or Single-source Thermal Ablation Techniquementioning

confidence: 99%

Organometal halide perovskite thin films and solar cells by vapor deposition

et al. 2016

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Section: Flash Evaporation or Single-source Thermal Ablation Techniquementioning

confidence: 99%

Organometal halide perovskite thin films and solar cells by vapor deposition

et al. 2016

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“…[1][2][3][4][5] Similarly, ordered structures of nanomaterials have drawn signicant research interest, since such materials give rise to many unique and enhanced properties in comparison to their bulk counterparts. [1][2][3][4][5] Similarly, ordered structures of nanomaterials have drawn signicant research interest, since such materials give rise to many unique and enhanced properties in comparison to their bulk counterparts.…”

Section: Introductionmentioning

confidence: 99%

Formation of PbO hexagonal nanosheets and their conversion into luminescent inorganic–organic perovskite nanosheets: growth and mechanism

Shakya

Prakash

2015

RSC Adv.

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We report the formation of inorganic-organic (IO) hybrid perovskite (C 6 H 9 C 2 H 4 NH 3 ) 2 PbI 4 hexagonal nanosheets, using anisotropically grown PbO hexagonal nanosheets as a parent material. In place of the conventional chemical synthesis route, the PbO hexagonal nanosheets have been synthesized by the bottom-up electrochemical deposition technique. Conversion of PbO into the desired hybrid material has been achieved by the intercalation of organic moieties into the alternate layers of inorganic networks. These hybrid structures have shown strong room-temperature excitonic emission at 518 nm.An extensive study has been performed to observe the deposition parameters responsible for the growth of a well-defined hexagonal nanosheet. High-resolution transmission electron microscope results confirmed the growth of single crystalline hexagonal nanosheets in (110) plane orientation. Investigation of the surface morphology, further verified the formation of nanosheets with a smooth surface having an average roughness of 2 nm. The study revealed that the anisotropic growth of nanosheets is a result of different growth rates of crystal faces associated with the crystal lattice. ; Tel: +91 11 26591326 † Electronic supplementary information (ESI) available: Fig. S1: cyclic voltammogram of electrolyte solution used for deposition and X-ray diffraction pattern of as-deposited PbO lm. Table S1 shows the percentage of elemental composition of PbO nanosheets given by EDX result. Fig. S2 shows the effect of pH and concentration of precursors in the deposition bath. Fig. S3 shows the growth of hexagonal nanosheets as a result of secondary nucleation on the substrate. Fig. S4 shows the white light confocal microscopic images of PbO hexagonal nanosheets and photoluminescence images of converted inorganic-organic perovskite nanosheets. See

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“…Almeida et al have shown that oleylammonium cations can induce anisotropic growth, 35 while others have claimed that oleylammonium (despite the length of its backbone and its non-planar configuration caused by the vinyl bond) may lead to quasi-2D structures. 36,37 In order to further prove this hypothesis, we conducted XRD analysis (Fig. 2b) on drop-casted NCs films.…”

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confidence: 96%