Development of an Oxygen Sensor Based on the Long-term Fluorescence Effect of Organic Semiconductors
Students Name: Maiboroda Rostyslav Yuriiovych
Qualification Level: magister
Speciality: Electronics
Institute: Institute of Telecommunications, Radioelectronics and Electronic Engineering
Mode of Study: full
Academic Year: 2022-2023 н.р.
Language of Defence: ukrainian
Abstract: The master’s thesis is devoted to the development of a multi-parameter optical Oxygen sensor based on the NeoFox hardware and software platform. The thesis present the studies of the bFPC: PO-T2T exciplex-forming system as an active probing component of the optical sensor design. It demonstrates the possibility of high-precision measurement of oxygen concentration up to ± 4% in the range from 0% O2 to 20% O2. The bFPC:PO-T2T and bTfPC:PO-T2T exciplexes have been studied. It have shown good prospects for their use as highly efficient green TADF emitters of white OLED structures. Developed using the "wet" technology, white OLEDs showed high quality warm white electroluminescence with a color rendering index of 92, a color temperature of 3655 K and coordinates CIE1931 (0,384, 0,399). The electroluminescent properties of the OLED structure of dark blue radiation color based on intramolecular TADF donor-acceptor molecular 4-CzPyCl4 have been studied. This light-emitting heterostructure shows a maximum brightness of 3000 cd/m2. Based on these data, a compact sensor based on the NeoFox microcontroller was developed, which can be used to monitor the safe level of Oxygen in agricultural, industrial, transport and construction enterprises, as well as by private individuals. The development of the device is based on the use of optical sensors, which, in comparison with other types of sensors, are characterized by the following advantages: short response time and high selectivity, the possibility of conducting measurements in real time, which is a very important factor for controlling technological processes, the absence of electrical interference, accordingly, measurements can be to be carried out in strong electromagnetic fields, as well as cheapness and practicality in application [6]. The creation of this device is relevant, as it allows solving the complex problem of monitoring the atmosphere, control of technological environments and safety of industrial production using electronic devices. List of used literary sources: 1. Meng Zhang, Si-Wei Zhang, Chengcheng Wu, Wansi Li, Yuan Wu, Chen Yang, Zhimin Meng, Wenzhan Xu, Man-Chung Tang, Rongjun Xie, Hong Meng, Guodan Wei, Fine Emission Tuning from Near-Ultraviolet to Saturated Blue with Rationally Designed Carbene-Based 3 + 2 + 1 Iridium(III) Complexes, ACS Applied Materials & Interfaces, 14, 1, (1546-1556), (2022). 2. Husain N. Kagalwala, Jeni Gerberich, Chancellor J. Smith, Ralph P. Mason, Alexander R. Lippert, Chemiluminescent 1,2?Dioxetane Iridium Complexes for Near?Infrared Oxygen Sensing, Angewandte Chemie, 134, 12, (2022). 3. Husain N. Kagalwala, Jeni Gerberich, Chancellor J. Smith, Ralph P. Mason, Alexander R. Lippert, Chemiluminescent 1,2?Dioxetane Iridium Complexes for Near?Infrared Oxygen Sensing, Angewandte Chemie International Edition, 61, 12, (2022). 4. Lucius Schmid, Felix Glaser, Raoul Schaer, Oliver S. Wenger, High Triplet Energy Iridium(III) Isocyanoborato Complex for Photochemical Upconversion, Photoredox and Energy Transfer Catalysis, Journal of the American Chemical Society, 144, 2, (963-976), (2022). 5. Taito Noda, Hisahiro Sasabe, Tsukasa Owada, Ryo Sugiyama, Ayato Arai, Kengo Kumada, Hisaki Tsuneyama, Yu Saito, Junji Kido, Constructing Soluble Anthracene?Based Blue Emitters Free of Electrically Inert Alkyl Chains for Efficient Evaporation? and Solution?Based OLEDs, ChemPlusChem, 87, 3, (2022). 6. Xiaoxiao Hu, Naoya Aizawa, Minjun Kim, Miaofei Huang, Zhiyi Li, Guanhao Liu, Honglei Gao, Teng Gao, Xiangyu Dong, Yong Zhang, Jianjun Liu, Pengfei Wang, Yuanping Yi, Yong-Jin Pu, Ying Wang, Dual-acceptor thermally activated delayed fluorescence emitters: Achieving high efficiency and long lifetime in orange-red OLEDs, Chemical Engineering Journal, 434, (134728), (2022). 7. Shaivi Kesari, Brijesh Kumar Mishra, Aditya N. Panda, Excited states in RED/near infrared region TADF molecules: TDDFT vs ADC(2), Chemical Physics Letters,139383, 791, (139383), (2022).