Novel Synthesis and Characterization of Nanostructured Materials

Çözelti Yanma Sentezi ile Metal Oksit Tozlarının Üretilmesi

“…Şekil 1. Çözelti yanma sentezinin şematik gösterimi (Hacimsel yanma) [3] Çözelti yanma sentezi, nano ölçekli malzemelerin sentezlenmesinde başvurulabilecek olan etkili bir yöntemdir ve birçok ileri teknoloji uygulama alanında kullanılmaktadır [5]. Çözelti yanma sentezi ile özgün malzemelerin üretilebilmesi yöntemin bazı özellikleriyle mümkün olabilmektedir.…”

Low‐Temperature Combustion Synthesis of a Spinel NiCo2O4 Hole Transport Layer for Perovskite Photovoltaics

“…For the fabrication of efficient perovskite solar cells (PVSCs), the so-called n-i-p architecture is widely used. [33,45] The combustion synthesis of metal oxides exhibits great advantages comparing to other NP synthesis methods; namely, simple experimental setup, reduced number of postprocessing steps, formation of NPs without agglomeration, high purity of materials, and precise control of particle's size and crystallinity by adjusting the processing parameters. [35,43,44] Upon heating gelation occurs and then combustion process starts resulting in the synthesis of the corresponding metal oxide.…”

“…[35,43,44] Upon heating gelation occurs and then combustion process starts resulting in the synthesis of the corresponding metal oxide. [33,34,51,52] Nickel cobaltite (NiCo 2 O 4 ) is a p-type transparent conductive oxide semiconductor consisting of abundant and environmentally friendly elements (Co, Ni), with a relatively wide optical band gap (≈2.1-2.4 eV), deep-lying valence band (VB of 5.3 eV) that matches well with the VB of CH 3 NH 3 PbI 3 perovskite semiconductor and a much better conductivity than NiO and Co 3 O 4 (at least two orders of magnitude higher). [30,32,[46][47][48][49][50] In general, the reaction mechanism of the combustion is affected by many factors such as the type of fuel, fuel-to-oxidizer ratio, ignition temperature, and the H 2 O content of the precursor blend.…”

“…Inorganic p-type semiconductor materials have the advantages of providing energy levels for improved hole selectivity and chemical stability, showing promising performance as HTLs in PVSCs. [33][34][35] The combustion technique appears to be versatile and effective for the synthesis of high crystallinity solution-processed metal oxides thin films using low temperature. However, in order to achieve the required crystallinity, temperatures above 400 °C are usually required.…”

Effect of the Fuels Glycine, Urea and Citric Acid on Synthesis of the Ceramic Pigment ZnCr2O4 by Solution Combustion

“…Among the main techniques for generating nanoparticles via the wet chemical route, solution combustion is the one that stands out. This simple technique has many advantages: homogeneous mixing, good stoichiometric control, production of active submicron-size particles in a relatively short processing time, and it involves a combustion process initiated at low temperatures, which makes use of the heat energy liberated by the exothermic reaction between fuel and nitrate ions 15 . However, it has not yet been reported the influence on the color of spinel structure ZnCr 2 O 4 when is synthesized by solution combustion using glycine, urea, and citric acid as fuels.…”