Electrical and Optical Properties of TPBi and CzSi Films Fabricated by Spin Coating: The Effects of Varying Thickness and Applied Rapid Thermal Annealing

Year 2021, Volume: 11 Issue: 3, 2016 - 2029, 01.09.2021

Asim Mantarcı

https://doi.org/10.21597/jist.928714

Abstract

Electrical and optical properties depending on effects of varying thickness and applied rapid thermal annealing of TPBi and CzSi films fabricated by spin coating were determined in detail and the results of these effects were analyzed and discussed. While TPBi film with the highest electrical conductivity in the 3.54-3.56 eV is 0.714 mm thick film (4.13x1012 Siemens at 3.55 eV energy), the film with the lowest electrical conductivity is 0.702 mm thick (1.72x1012 Siemens at 3.55 eV energy). It was found that the refractive index values of TPBi film increased with increasing thickness in region between 356 nm-374 nm. It was observed that when the thickness of TPBi film was increased from 0.702 mm to 0.703 mm, optical band gap of the film did not change, when it was increased to 0.706 mm, the optical band gap energy increased from 3.48 eV to 3.52 eV. As for the rapid annealing effects; basic physical properties of CzSi film depending on various annealed temperatures have been investigated in detail, just like thickness effects. In summary, different thicknesses and rapid thermal effects on noteworthy physical properties of films such as optical electrical conductivity, absorption band edge energy, refractive index, optical band gap energy have been studied and discussed in detail.

Keywords

CzSi film, TPBi film, Rapid thermal treatment, mean square roughness, Electrical conductivity

Supporting Institution

muş alparslan universitesi BAP birimi

Project Number

BAP-20-VMYO-4901-01

Thanks

We thank Muş Alparslan University BAP department for the support of this research.

References

• Asnani S, Canu MG, Farinetti L, Montrucchio B, 2021. On producing energy-efficient and contrast-enhanced images for OLED-based mobile devices. Pervasive and Mobile Computing, In Press:101384.
• Banerjee PK, Pereira JMT, Mitra SS, Dutta R, 1986. Properties of compensated and doped amorphous SiC and GeSi alloy films. Journal of Non-Crystalline Solids, 87(1):1-29.
• Chang C-H, Tien K-C, Chen C-C, Lin M-S, Cheng H-C, Liu S-H, Wu C-C, Hung J-Y, Chiu Y-C, Chi Y, 2010. Efficient phosphorescent white OLEDs with high color rendering capability. Organic Electronics, 11(3):412-418.
• Chansin G, 2021. LCD Fights Back Against OLED With Mini LED Back light Technology. Information Display, 37(2):49-51.
• Costa JCS, Taveira RJS, Lima CFRAC, Mendes A, Santos LMNBF, 2016. Optical band gaps of organic semiconductor materials. Optical Materials,58:51-60.
• Daniso E, Maroh B, Feldbacher S, Mühlbacher I, Schlögl S, Melpignano P, 2021. Tailoring the chemical functionalization of a transparent polyethylenefoilforits application in an OLED-based DNA biosensor. Applied Surface Science, 552:149408.
• Das HS, DasR, Nandi PK, Biring S, Maity SK, 2021. Influence of Ga-doped transparent conducting ZnO thin film for efficiency enhancement in organic light-emitting diode applications. Applied Physics A, 127(4):225.
• Duan L, Wang G, Duan Y, Lei D, Qian F, Yang Q. 2021. Design Simulation and Preparation of White OLED Micro display Based on Microcavity Structure Optimization. Journal of Spectroscopy 2021:5529644.
• Jang JG, Ji HJ, Kim HS, Jeong JC, 2011. TPBI:Fırpic organic light emitting devices with the electron transport layer of Bphen/Alq3. Current Applied Physics, 11(1, Supplement):S251-S254.
• Kocyigit A, Erdal MO, Yıldırım M. 2019. Effect of Indium Doping on Optical Parameter Properties of Sol–Gel-Derived ZnO Thin Films. Zeitschriftfür Naturforschung A 74(10):915-923.
• Li HH, 1980. Refractive index of silicon and germanium and its wavelength and temperature derivatives. Journal of Physical and Chemical Reference Data, 9(3):561-658.
• Liu H, Cheng G, Hu D, Shen F, Lv Y, Sun G, Yang B, Lu P, Ma Y, 2012. A Highly Efficient, Blue-Phosphorescent Device Based on a Wide-Bandgap Host/FIrpic: Rational Design of the Carbazole and Phosphine Oxide Moieties on Tetraphenyl silane. Advanced Functional Materials, 22(13):2830-2836.
• Liu Y, Xie G, Wu K, Luo Z, ZhouT, Zeng X, Yu J, Gong S, Yang C, 2016a. Boosting reverse inter system crossing by increasing donors in triarylboron/phenoxazinehybrids: TADF emitters for high-performance solution-processed OLEDs. Journal of Materials Chemistry C, 4(20):4402-4407.
• Liu Z, Zhang L, Gao X, Zhang L, Zhang Q, Chen J, 2016b. Highly efficient green PLED based on triphenlyaminesilole-carbazole-fluorene copolymers with TPBI as the hole blocking layer. Dyes and Pigments, 127:155-160.
• Luo Y, Li S, Zhao Y, Li C, Pang Z, Huang Y, Yang M, Zhou L, Zheng X, Pu X andothers, 2020. An Ultraviolet Thermally Activated Delayed Fluorescence OLED with Total External Quantum Efficiency over 9%. Advanced Materials, 32(32):2001248.
• Nabha-Barnea S, Gotleyb D, Yonish A, Shikler R, 2021. Relating transient electroluminescence life time and bulk transit time in OLED during switch-off. Journal of Materials Chemistry, C 9(2):719-726.
• Pecho OM, Mai A, MünchB, Hocker T, Flatt RJ, Holzer L, 2015. 3D Microstructure Effects in Ni-YSZ Anodes: Influence of TPB Lengths on theElectro chemical Performance. Materials, 8(10):7129-7144.
• Ren Q, ZhaoY, Liu C, Zhan H, Cheng Y, Li W, 2021. The exploration of acceptor ratio in thermally activated delayed fluorescent donor for the effect on exciplex OLED. Optical Materials, 112:110779.
• Shih C-J, Li Y-Z, Li M-Z, Biring S, Huang B-C, Liu C-W, Yeh T-H, Luo D, Lee J-H, Huang Y-H and others, 2021. Transparent organic upconversion device targeting high- grade infrared visual image. Nano Energy,86:106043.
• Tsai M-H, Lin H-W, Su H-C, Ke T-H, Wu C-c, FangF-C, Liao Y-L, Wong K-T, Wu C-I, 2006. Highly Efficient Organic Blue Electro phosphorescent Devices Based on 3,6-Bis(triphenylsilyl)carbazole as the Host Material. Advanced Materials, 18(9):1216-1220.
• Wang T, Wang Y-Z, Jing L-C, Zhu Q, Ethiraj AS, Geng W, Tian Y, Zhu Z, Meng Z, Geng H-Z, 2021. Novel biode gradable and ultra-flexible transparent conductive film for green light OLED devices. Carbon, 172:379-389.
• Won Y, Shin HS, Jo M, Lim YJ, Manda R, Lee SH, 2021. An electrically switchable dye-doped liquid crystal polarizer for organic light emitting-diode displays. Journal of Molecular Liquids, 333:115922.
• Wu J, Wei M, Fu Y, Cui C, 2021. Color mis match and observer metamerism between conventional liquid crystal displays and organic light emitting diode displays. Optical Express, 29(8):12292-12306.
• Yang Q, Hao Y, Wang Z, Li Y, Wang H, Xu B, 2012. Double-emission-layer green phosphorescent OLED based on LiF-doped TPBi as electron transport layer for improving efficiency and operational lifetime. Synthetic Metals, 162(3):398-401.
• Yıldırım M. 2019. Characterization of the framework of Cu doped TiO2 layers: An insight into optical, electrical and photodiode parameters. Journal of Alloys and Compounds 773:890-904.
• Yu J, Wang N, Zang Y, Jiang Y, 2011. Organic photovoltaic cellsbased on TPBi as a cathode buffer layer. Solar Energy Materials and Solar Cells, 95(2):664-668.