SYNTHESIS AND INVESTIGATION OF STRUCTURAL, SURFACE MORPHOLOGICAL AND OPTICAL PROPERTIES OF InSe/PMItz HYBRID HETEROJUNCTION

Öz

On a series of annealed and unannealed InSe thin films which were formerly produced by electrochemical deposition method, organic PMItz semiconductor compound was growth by physical vapour deposition (PVD) method. Structural analyses of the films carried out by X-ray diffractometry (XRD) method revealed that glass/ITO/InSe film formed in hexagonal InSe phase while glass/ITO/InSe(annealed) film formed in monoclinic In6Se7 and orthorombic In4Se3 phases. Surface analyses of the layers forming heterojunction were conducted by atomic force microscoby (AFM) and it is observed that the layers are homogenous and have different roughness values. Optical analyses of the films demonstrated that annealing of the film result with increased absorption coefficient and reduced energy band gap. Moreover, other optical parameters of the films i.e. refractive indice(n), extinction coefficient (k), real dielectric constant(Er), imaginary dielectric constant(Ei) and optical conductivity were determined and compared within 300-1000 nm range.

Anahtar Kelimeler

• InSe
• Hybrid heterojunction
• Opto-electronic.
• Organic semiconductor

Kaynakça

1. 1. Mudd, G.W., et al., Tuning the Bandgap of Exfoliated InSe Nanosheets by Quantum Confinement. Advanced Materials, 2013. 25(40): p. 5714-+.
2. 2. Han, G., et al., Indium Selenides: Structural Characteristics, Synthesis and Their Thermoelectric Performances. Small, 2014. 10(14): p. 2747-2765.
3. 3. Yuksek, M., et al., Nonlinear and saturable absorption characteristics of Ho doped InSe crystals. Optics Communications, 2014. 310: p. 100-103.
4. 4. Ho, C.H. and Y.J. Chu, Bending Photoluminescence and Surface Photovoltaic Effect on Multilayer InSe 2D Microplate Crystals. Advanced Optical Materials, 2015. 3(12): p. 1750-1758.
5. 5. Politano, A., et al., Indium selenide: an insight into electronic band structure and surface excitations. Scientific Reports, 2017. 7.
6. 6. Zhou, J.D., et al., InSe monolayer: synthesis, structure and ultra-high second-harmonic generation. 2d Materials, 2018. 5(2).
7. 7. Wang, Y., et al., Molecular Doping of 2D Indium Selenide for Ultrahigh Performance and Low-Power Consumption Broadband Photodetectors. Advanced Functional Materials, 2021. 31(30).
8. 8. Sanchez-Royo, J.F., et al., Electronic structure, optical properties, and lattice dynamics in atomically thin indium selenide flakes. Nano Research, 2014. 7(10): p. 1556-1568.

9. 9. Cho, S.H., et al., Bias-controlled multi-functional transport properties of InSe/BP van der Waals heterostructures. Scientific Reports, 2021. 11(1).
10. 10. Zhou, Y., Optoelectronic Organic–Inorganic Semiconductor Heterojunctions. 1st ed, ed. Y. Zhou. 2021: CRC Press. 351.
11. 11. Wang, Z., L. Huang, and L. Chi, Organic Semiconductor Field-Effect Transistors Based on Organic-2D Heterostructures. Frontiers in Materials, 2020. 7(295).
12. 12. Novota, M., et al., New phenanthrene-based organic semiconductor material for electronic devices. 2014 10th International Conference on Advanced Semiconductor Devices & Microsystems (Asdam), 2014: p. 97-100.
13. 13. Pudasaini, P.R. and A.A. Ayon, Low-cost, high-efficiency organic/inorganic hetero-junction hybrid solar cells for next generation photovoltaic device. 13th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (Powermems 2013), 2013. 476.
14. 14. Li, G.W., et al., Planar Conjugated Polymers Containing 9,10-Disubstituted Phenanthrene Units for Efficient Polymer Solar Cells. Macromolecular Rapid Communications, 2014. 35(12): p. 1142-1147.
15. 15. Jayabharathi, J., P. Ramanathan, and V. Thanikachalam, Synthesis and optical properties of phenanthromidazole derivatives for organic electroluminescent devices. New Journal of Chemistry, 2015. 39(1): p. 142-154.
16. 16. Zhuang, S.Q., et al., Efficient nondoped blue organic light-emitting diodes based on phenanthroimidazole-substituted anthracene derivatives. Organic Electronics, 2012. 13(12): p. 3050-3059.
17. 17. Sun, Y.F., et al., The synthesis, two-photon absorption and blue upconversion fluorescence of novel, nitrogen-containing heterocyclic chromophores. Dyes and Pigments, 2009. 81(1): p. 10-17.
18. 18. Wang, B., et al., Pyridine-containing phenanthroimidazole electron-transport materials with electron mobility/energy-level trade-off optimization for highly efficient and low roll-off sky blue fluorescent OLEDs. Journal of Materials Chemistry C, 2015. 3(29): p. 7709-7719.
19. 19. Chen, W.C., et al., Molecular modification on bisphenanthroimidazole derivative for deep-blue organic electroluminescent material with ambipolar property and high performance. Organic Electronics, 2015. 17: p. 159-166.
20. 20. Li, C.L., et al., High performance full color OLEDs based on a class of molecules with dual carrier transport channels and small singlet-triplet splitting. Chemical Communications, 2015. 51(53): p. 10632-10635.
21. 21. Wang, Z.M., et al., Phenanthro[9,10-d]imidazole as a new building block for blue light emitting materials. Journal of Materials Chemistry, 2011. 21(14): p. 5451-5456.
22. 22. AktaŞ, S. and F. ÜNal, Investigation of Structural and Electrical Properties of Metal Oxide and Organic Based Multi Heterojunction. Karadeniz Fen Bilimleri Dergisi, 2022. 12(1): p. 508-520.
23. 23. ÜNAL, F., Investigation Of Some Optical And Electrical Properties Of InSe Thin Film, a Window Layer for Photovoltaic Cell Growth on Glass/GaSe Substrate by M-CBD Method. Karadeniz Fen Bilimleri Dergisi, 2021. 11(1): p. 297-306.
24. 24. Dwivedi, D.K., et al., Structural and optical investigations of Cd1-xZnxTe thin film. Journal of Non-Crystalline Solids, 2010. 356(31-32): p. 1563-1568.
25. 25. Kırmızıgül, F., E. Güneri, and C. Gümüş, Effects of different deposition conditions on the properties of Cu2S thin films. Philosophical Magazine, 2013. 93(5): p. 511-523.
26. 26. Kurt, M.S., et al., Optical and Electrical Characterization of a ZnO/Coronene-Based Hybrid Heterojunction Photodiode. Journal of Electronic Materials, 2022.
27. 27. Zurnacı, M., et al., Synthesis of a new 1,3,4-thiadiazole-substituted phenanthroimidazole derivative, its growth on glass/ITO as a thin film and analysis of some surface and optoelectronic properties. New Journal of Chemistry, 2021. 45(48): p. 22678-22690.
28. 28. Unal, F., S. Demir, and H. Mammadov, Structural, surface morphological, optical and electrical properties of InxSey thin films, an absorber layer for photovoltaic cells fabricated by M-CBD method using different variables. Turkish Journal of Chemistry, 2021. 45(6): p. 1761-1773.
29. 29. Norouzzadeh, P., et al., Investigation of structural, morphological and optical characteristics of Mn substituted Al-doped ZnO NPs: A Urbach energy and Kramers-Kronig study. Optik, 2020. 204: p. 164227.
30. 30. OLeary, S.K., S. Zukotynski, and J.M. Perz, Disorder and optical absorption in amorphous silicon and amorphous germanium. Journal of Non-Crystalline Solids, 1997. 210(2-3): p. 249-253.
31. 31. Pandey, P., R. Kurchania, and F.Z. Haque, Structural, diffused reflectance and photoluminescence study of cerium doped ZnO nanoparticles synthesized through simple sol–gel method. Optik, 2015. 126(21): p. 3310-3315.