Currently, two-dimensional tin-based halide perovskites (2D- THP) have drawn attention owing to improved ambiental stability, low toxicity, thickness dependant optical properties, and high exciton energy binding [1, 2], showing great potential to be exploited as lead-free visible light emitters on optoelectronic and photovoltaic devices [3]. Moreover, optical properties and carrier mobility can be adjusted as a function of organic cations length, opening a full gamut of possibilities for the design and development of new Ruddlesden Popper perovskite nanostructures [4]. Among 2D- THPs reported now, TEA₂SnI₄ perovskite has shown some interest in LED applications because of its high exciton energy binding (calculated in 51.1 meV) and low exciton- phonon interactions [5]. In the literature, 2D- TEA₂SnI₄ has been prepared by LARP and anti-solvent approaches, showing a PLQY record of 18.85% and 23 % on nanodisks solution [6,7] and thin film [8] respectively. Although, the development of nano- and microcrystals have not been completed and explored for this material because of uncontrollable crystallization rate, the formation of native defects, and poor passivated surfaces [9]. Moreover, the synthesis and physical properties of TEA₂SnBr₄ and TEA₂SnCl₄ nanomaterials have not been reported yet. For the first time, TEA₂SnX₄ (X= Cl, Br, I) micro and nanocrystals were synthesized by the hot injection method. We determine that the size and physical properties of TEA₂SnX₄ micro and nanocrystals are determined by parameters such as temperature and molar ratio of precursors. For the case of TEA₂SnCl₄ and TEA₂SnBr₄, we observe a broad PL band emission centered at 595 nm and 608 nm respectively. In both cases, we recorded a high Stokes shift (approximately 300 nm), and hence, it might be indicative of self-trapped excitons recombination mechanisms. The maximum PLQY measured in these samples was 50 % for TEA₂SnBr₄, 20 % for TEA₂SnCl₄, and 3% for TEA₂SnI₄. For TEA₂SnI₄ micro and nanocrystals, optical properties are a bit similar to the reported in the literature [6,7], represented by a sharp band emission centered at 647 nm with an FWHM = 38 nm at 300 K. PL and TRPL measurements were conducted at different temperatures to understand the optical properties of TEA₂SnX₄ micro and nanocrystals. In all cases, we observe an X-ray diffraction pattern characterized by strong reflections which is consistent with the quantum well like the structure of 2D hybrid tin halide perovskites . Additionally, ¹H,¹³C and ¹¹⁹Sn nuclear magnetic resonance, Raman spectroscopy, X- ray photoelectron spectroscopy and transmision electron microscopy measurements were carried out.