Research has been carried out in the form of the synthesis of a thin film of Titanium Dioxide with a mixture of Fluorine and Indium doping. The purpose of this research is to obtain the characteristics of a thin filmphotocatalyst with a crystal structure and optical properties that can be applied to solar cell components. This research was carried out in two stages, namely the synthesis stage and the thin filmcharacterization stage. The TiO2 thin film synthesis stage is through the substrate preparation process, sol-gel solution preparation, thin film deposition, and heating process, while the thin-film characterization stage uses X-Rays Diffraction (XRD) to identify crystal properties and UV-VisSpectrophotometer to determine optical properties of a thin film of TiO2 and TiO2:(F+In). Based on data analysis and discussion, XRD test results showed that the thin film of TiO2:(F+In) has an Anatase phase with a tetragonal shape, and has an average crystal size that is getting smaller from 23.14 to 12.17 nm. Based on the results of research, data analysis, and discussion, it was found that the sample of TiO2 : (F+In) has characteristics that can be used as materials in the development of solar cell components. These characteristics are like 1). havenano-sized particles, 2). have a low transmittance value and high absorbance in absorbing sunlight, and 3). have a low activation energy and energy gap (direct and indirect).
ABSTRAKTelah dilakukan penelitian sintesis lapisan tipis TiO2 dengan doping campuran Fluorin dan Indium. Tujuan penelitian ini untuk menghasilkan lapisan tipis yang baik digunakan sebagai salah satu komponen pada sel surya yaitu lapisan absorben. Sintesis lapisan tipis menggunakan metode spin-coating dengan bantuan alat centrifuge yang dimodifikasi. Penelitian ini dilaksanakan di Laboratorium Kimia Dasar dan Kimia Organik, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Mataram. Jenis penelitian ini adalah penelitian eksperimen murni dengan data dianalisis secara deskriptif. Proses sintesis lapisan tipis terdiri dari beberapa tahapan yaitu 1). Persiapan substrat, 2). Pembuatan larutan sol-gel, 3). Deposisi lapisan tipis, dan 4). Pemanasan sampel lapisan tipis. Sampel lapisan tipis diberikan tiga perlakuan berbeda yang terdiri dari 1). Konsentrasi larutan, 2). Jumlah lapisan, dan 3). Variasi suhu pemanasan sampel. Berdasarkan penelitian yang sudah dilakukan didapatkan bahwa semakin besar konsentrasi doping yang digunakan maka semakin gelap permukaan sampel lapisan tipis yang dihasilkan. Kata kunci: sintesis lapisan tipis; TiO2:(F+In); metode spin-coating; sel surya. ABSTRACTResearch on the synthesis of TiO2 thin films with doping mixture of Fluorine and Indium has been carried out. The aim of this research is to produce a thin film which is suitable for use as a component of solar cells, namely the absorbent layer. Synthesis of thin films using the spin-coating method with the help of a modified centrifuge. This research was conducted at the Laboratory of Basic Chemistry and Organic Chemistry, Faculty of Mathematics and Natural Sciences, Mataram University. This type of research is pure experimental research with data analyzed descriptively. The thin layer synthesis process consists of several stages, namely 1). Substrate preparation, 2). Preparation of sol-gel solution, 3). Thin layer deposition, and 4). Heating the thin layer sample. The thin layer sample was given three different treatments consisting of 1). The concentration of the solution, 2). Number of layers, and 3). Variation in sample heating temperature. Based on the research that has been done, it was found that the greater the doping concentration used, the darker the surface of the resulting thin layer sample. Keywords: synthesis thin film, TiO2:(F+In), spin-coating method, solar cells
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