In situintercalation strategies for device-quality hybrid inorganic-organic self-assembled quantum wells

Abstract

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Naturally Self-Assembled Nanosystems and Their Templated Structures for Photonic Applications

“…As mentioned before, the kinetics and layer formation during intercalation are critically dependent on the nature and shape of the guest moiety, concentration of guest molecules, thickness of parent films, intercalation time, and the solvent used [7]. The schematic of intercalation strategy of IO-hybrid for a high-quality thin film fabrication is demonstrated in Figure 5.…”

“…Uniform 2D IO-hybrids films can, thus, be fabricated by an appropriate choice of organic moieties. A brief description of the intercalation process is explained here by taking an example of the IO-hybrid 2(1-cyclohexenyl) ethylammonium tetraiodoplumbate ((C 6 H 9 C 2 H 4 NH 3 ) 2 PbI 4 , CHPI) [7]. Theorganic iodide, 2-(1-cyclohexenyl) ethylammonium iodide (C 6 H 9 C 2 H 4 NH 3 I) (CHI) is formed when 1 mL of 2-(1-cyclohexenyl) ethylamine was added to 2.1 mL of HI (47%).…”

“…Similar is the method for other organic iodide synthesis. Suitable solvent (such as 16.08Å 6.78Å Figure 5: Schematic representation of intercalation process for 2D layered IO-hybrid thin films [7]. Essentially the intercalation method involves the intercalation of organic moiety into intestinal spaces of layered inorganic host to obtain desired inorganic-organic exfoliated layered hybrid.…”

“…Finally, the deposited PbI 2 thin films are dipped into organic iodide films, with a controlled speed and for specific time, to obtain desired IO-hybrid films. The resultant films, fabricated by the intercalation process, were smooth and uniform over a large area and had shown relatively well-stacked (00l oriented) inorganic and organic monolayers [7] (Figure 6). …”

“…Several self-assembly methods have been developed in the recent past, such as phase-separation of copolymers, formation of pores in alumina, liquid crystals, zerogels, and polymer spheres templating [3][4][5]. At molecular levels, one of the examples of self-assembly is the intercalation strategy wherein the organic entities are spacefilled within naturally self-assembled crystalline inorganic semiconductor hosts, with an opportunity to produce a very special and tailor-made semiconductor, known as inorganicorganic hybrids [6][7][8]. In a macro level, mono dispersed mesa sized spherical colloids are self-assembled to form three-dimensionaly periodic lattices and are famously known as synthetic opals (3D photonic crystals) [9][10][11][12][13][14][15][16][17].…”