Optical and structural characterization of copper indium disulfide thin films

Influence of aluminum doping in CuInS2 prepared by spray pyrolysis on different substrates

“…For undoped CuInS 2 thin films, E g equals 1.39 eV [7]. Indeed, the 1‰ and 2‰ Al-doped films have band gap energy equal to 1.44 and 1.48 eV, respectively, which is in the suitable range for sunlight absorption and closely agrees with the values reported for CuInS 2 thin films obtained by spray chemical vapor deposition [4] and by reactive sputtering [22]. The band gap energy values of CuInS 2 :Al thin films sprayed on various substrates ([Al]/[In] = 1‰) are reported in Table 2.…”

“…Cu-chalcopyrite semiconductors have been studied extensively in recent years due to their applications as absorbers for large-area low-cost photovoltaic devices [1]. CuInS 2 as a chalcopyrite nontoxic semiconductor material has a high absorption coefficient and a direct band gap varying from 1.39 to 1.55 eV depending on the method of preparation [2][3][4][5][6][7]. It is therefore, a promising candidate for photovoltaic applications.…”

A Novel Route for the Synthesis of Mesoporous and Low-Thermal Stability Materials by Coupled Dissolution-Reprecipitation Reactions: Mimicking Hydrothermal Mineral Formation

“…[22][23][24] Hence CuInS 2 is an ideal material for use in photovoltaic devices such as solar panels, [24] with the added advantage of posing only a minimal toxicological threat to the environment. [25] CuInS 2 occurs naturally as the rare mineral roquesite in high-temperature hydrothermal veins, usually in the form of inclusions in chalcopyrite (CuFeS 2 ), sphalerite (ZnS) or bornite (Cu 5 FeS 4 ).…”

“…[25] CuInS 2 occurs naturally as the rare mineral roquesite in high-temperature hydrothermal veins, usually in the form of inclusions in chalcopyrite (CuFeS 2 ), sphalerite (ZnS) or bornite (Cu 5 FeS 4 ). [26] Synthesis of CuInS 2 has been achieved via a number of methods, including solidstate reaction, [27] solvothermal synthesis, [28] static hydrothermal synthesis, [29] chemical vapour deposition [22,30,31] and spray pyrolysis. [32] The application of CuInS 2 in photovoltaic devices requires the production of pure, good quality thin films, [24] but the cost of synthesis remains a major drawback for widespread use.…”

Progress and Prospect on Stability of Perovskite Photovoltaics

“…Non-renewable energy accounts for most of the total energy consumption in the world as shown in Figure 1. Climate change caused by environmental pollution from the exploration and combustion of fossil fuels has posed threat to our environment and would exhaust in near future [6,7]. These have derived the passion to search for alternative energy source (renewable energy) to sustain future growing energy consumption and to reduce environmental pollution and climate change [8].…”