SYNTHESIS OF MAPbCl3 ORGANOMETAL HALIDE PEROVSKITE SINGLE CRYSTALS WITH MICROWAVE ASSISTED

• Main Author: WISNU ARIF SEKTIONO - NIM: 20215045 , MOCH.
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/23108
• Institution: Institut Teknologi Bandung

In the digital and information era, the technology advancement cannot be explained separately from basic semiconductor technology. Until now, devices of optoelectronic semiconductor and photovoltaic are still using material components with microcrystal and amorphous structures. These structures, however, have some drawbacks, such as boundaries between grains, ullage, and surface defects. Single crystal perovskite MAPbCl3 organic-inorganic hybrids appear to be a highly promising candidate for semiconductor material to the application on areas of electronic, photovoltaic, and optoelectronic like the field-effect based transistor, photodetector, LASER, solar cell, battery, luminescent device, and LED. The present investigation is aimed to synthesize single crystal perovskite MAPbCl3 coupled with microwave radiation. Heating using the microwave is known to be more efficient than that using the conventional heating method to the extent of acceleration and uniformity of the heating process. Subsequently, the formed single crystal MAPbCl3 is tested for its crystal characteristics using XRD (X-ray Diffraction). While the molecule clusters of crystal constituents are tested using FTIR (Fourier Transform Infrared Spectroscopy), its bandgap optical characteristic is characterized using Ultraviolet – Visible Light Spectroscopy. The characterization of photoluminescence (PL) is performed with fluorescence spectrophotometer, and the measurement of I-V is undertaken to observe the characteristics of charge carrier. The XRD findings indicate that the crystal phase formed in every sample has the constant value of crystal lattice by a = 5,6 Å, provided with the crystal structure of cubic Pm3 &#773;m. Perovskite crystal MAPbCl3 in every sample is found to contain almost the same band gap at the value range of 2,8 eV and to have absorption capability mean at the wavelength of 430 nm or in the range wavelength between the area of indigo-purple/violet. Additionally, it is found that the crystal sample yields the luminescence at the wavelength of 324 nm or in the field of ultraviolet with the excitation wavelength of 292 nm. The I-V meter characterization shows an ohmic graphic trend <br />