The Effect of Gas Flow Rate on Properties of Anthracene Single Crystals Grown by Physical Vapour Transport Method

Abstract

Molecular structure and ordering of organic semiconductors used in electronic devices are the key parameters on device performance. In this study, anthracene single crystals with large size and high quality, which is one of most widely used organic semiconductor, were growth by open physical vapour transport (PVT) process. The effect of inert argon flow rate used in open PVT method on structural, optical and electrical properties of anthracene single crystals was investigated. The single crystals were characterized by optical microscope, AFM, XRD and UV-Vis absorption spectroscopy. According to structural and optical properties, it was observed that the argon flow rate has a strong effect on single crystal properties. It was determined that the thinnest (670 nm) single crystal and the highest electrical conductivity (1.80x10-4 S cm-1) were obtain under 3.0 L h-1 argon flow rate. Herein, it was concluded that the properties of organic semiconductor single crystals utilized in high performance electronic devices could be easily tuned.

Keywords

• Anthracene
• Single crystal growth
• PVT
• Optical properties

Gaz Akış Hızının Fiziksel Buhar İletimi Yöntemiyle Büyütülen Antrasen Tek Kristallerin Özellikleri Üzerine Etkisi

Abstract

Elektronik cihazlar uygulamalarında kullanılan organik yarıiletkenlerin moleküler yapıları ve düzenlilikleri cihaz performansı üzerinde oldukça önemli özelliklerdir. Bu çalışmada, elektronik cihazlarda sıklıkla tercih edilen antrasenin fiziksel buhar iletimi (PVT) yöntemiyle büyük boyutlu ve yüksek moleküler düzene sahip tek kristalleri büyütülmüştür. Açık sistem PVT yönteminde kullanılan argon gazının akış hızının büyütülen tek kristallerin yapısal, optik ve elektriksel özellikleri üzerine etkisi incelenmiştir. Büyütülen tek kristaller optik mikroskop, AFM, XRD ve UV-Vis absorpsiyon spektroskopisi ile karakterize edilmiştir. Yapısal ve optik analizler sonucunda gaz akış hızının kristal özellikleri üzerinde büyük etkiye sahip olduğu gözlenmiştir. 3,0 L sa-1 argon akış hızında büyütülen antrasen tek kristallerinin en ince (670 nm) ve en yüksek elektriksel iletkenlik değerine (1,80x10-4 S cm-1) sahip olduğu belirlenmiştir. Yapılan çalışma, yüksek performanslı elektronik cihazlarda kullanılacak organik yarıiletken tek kristallerinin özelliklerinin gaz akış hızı ile değiştirilebileceği gösterilmiştir.

Keywords

• Antrasen
• Tek kristal büyümesi
• PVT
• Optik özellikler

References

1. [1] S. Günes, H. Neugebauer and N.S. Sariciftci, “Conjugated polymer-based organic solar cells,” Chemical Reviews, vol. 107, no. 4, pp. 1324-1338, 2007.
2. [2] Y. Park, P. Sun Kyung, B. Jun, Y.-E. Lee, S.U. Lee and M. Sung, “Quantitative correlation between carrier mobility and ıntermolecular center-to-center distance in organic single crystals,” Chemistry of Materials, vol. 29, no. 9, pp. 4072-4079, 2017.
3. [3] J.A. Lim, H.S. Lee, W.H. Lee and K. Cho, “Control of the morphology and structural development of solution-processed functionalized acenes for high-performance organic transistors,” Advanced Functional Materials, vol. 19, no. 10, pp. 1515-1525, 2009.
4. [4] H. Li, W. Shi, J. Song, H.-J. Jang, J. Dailey, J. Yu and H.E. Katz, “Chemical and biomolecule sensing with organic field-effect transistors,” Chemical Reviews, vol. 119, no. 1, pp. 3-35, 2019.
5. [5] H. Nakanotani and C. Adachi, “Organic light-emitting diodes containing multilayers of organic single crystals,” Applied Physics Letters, vol. 96, no. 5, pp. 053301, 2010.
6. [6] Y. Zhang, H. Dong, Q. Tang, S. Ferdous, F. Liu, S.C.B. Mannsfeld, W. Hu and A.L. Briseno, “Organic single-crystalline p−n junction nanoribbons,” Journal of the American Chemical Society, vol. 132, no. 33, pp. 11580-11584, 2010.
7. [7] H. Jiang and C. Kloc, “Single-crystal growth of organic semiconductors,” MRS Bulletin, vol. 38, no. 1, pp. 28-33, 2013.
8. [8] P. Hu, H. Li, Y. Li, H. Jiang and C. Kloc, “Single-crystal growth, structures, charge transfer and transport properties of anthracene-F4TCNQ and tetracene-F4TCNQ charge-transfer compounds,” CrystEngComm, vol. 19, no. 4, pp. 618-624, 2017.

9. [9] P.I. Djurovich, E.I. Mayo, S.R. Forrest and M.E. Thompson, “Measurement of the lowest unoccupied molecular orbital energies of molecular organic semiconductors,” Organic Electronics, vol. 10, no. 3, pp. 515-520, 2009.
10. [10] Z.A. Tan, S. Li, F. Wang, D. Qian, J. Lin, J. Hou and Y. Li, “High performance polymer solar cells with as-prepared zirconium acetylacetonate film as cathode buffer layer,” Scientific Reports, vol. 4, no. 1, pp. 4691, 2014.
11. [11] X. Zeng, Y. Qiu, J. Qiao, G. Dong and L. Wang, “Morphological characterization of pentacene single crystals grown by physical vapor transport,” Applied Surface Science, vol. 253, no. 7, pp. 3581-3585, 2007.
12. [12] P. Zhang, J. Deng, X. Zeng, Z. Liu, Y. Qiu, H. Zhong, Y. Fan, J. Huang, J. Zhang and K. Xu, “Growth mechanism of large-size anthracene single crystals grown by a solution technique,” Journal of Crystal Growth, vol. 311, no. 23, pp. 4708-4713, 2009.
13. [13] V.A. Postnikov and S.V. Chertopalov, “Growth of large naphthalene and anthracene single-crystal sheets at the liquid–air interface,” Crystallography Reports, vol. 60, no. 4, pp. 594-600, 2015.
14. [14] D. Nabok, P. Puschnig and C. Ambrosch-Draxl, “Cohesive and surface energies of ᴨ-conjugated organic molecular crystals: a first-principles study,” Physical Review B, vol. 77, no. 24, pp. 245316, 2008.
15. [15] V. Nagarajan, A. Nitthin Ananth and S. Ramaswamy, “Investigations onto the role of transition metal oxide dopants in anthracene crystals,” Materials Research Express, vol. 4, no. 12, pp. 125102, 2017.
16. [16] S.J. Chung, K.K. Kim and J.I. Jin, “Fluorescing wholly aromatic polyesters containing diphenylanthracene fluorophores,” Polymer, vol. 40, no. 8, pp. 1943-1953, 1999.
17. [17] A.J. Moulé, J.B. Bonekamp and K. Meerholz, “The effect of active layer thickness and composition on the performance of bulk-heterojunction solar cells,” Journal of Applied Physics, vol. 100, no. 9, pp. 094503, 2006.
18. [18] R.W. Day, D.K. Bediako, M. Rezaee, L.R. Parent, G. Skorupskii, M.Q. Arguilla, C.H. Hendon, I. Stassen, N.C. Gianneschi, P. Kim and M. Dincă, “Single crystals of electrically conductive two-dimensional metal–organic frameworks: Structural and electrical transport properties,” ACS Central Science, vol. 5, no. 12, pp. 1959-1964, 2019.
19. [19] L. Sun, S.S. Park, D. Sheberla and M. Dincă, “Measuring and reporting electrical conductivity in metal–organic frameworks: Cd2(TTFTB) as a case study,” Journal of the American Chemical Society, vol. 138, no. 44, pp. 14772-14782, 2016.
20. [20] V. Nagarajan, N. Ananth, T. Doss and S. Ramaswamy, “Investigations on the effect of nano Fe3O4 -doped anthracene single crystal,” Materials Research Innovations, vol. 22, no. 1, pp. 13-21, 2017.
21. [21] M. Campione, R. Ruggerone, S. Tavazzi and M. Moret, “Growth and characterisation of centimetre-sized single crystals of molecular organic materials,” Journal of Materials Chemistry, vol. 15, no. 25, pp. 2437-2443, 2005.
22. [22] H. Wu and J. Zhou, “Optical properties of anthracene single crystals grown by a simple solution technique,” International Journal of Modern Physics B, vol. 27, no. 8, pp. 1350022, 2013.
23. [23] M. Chen, L. Yan, Y. Zhao, I. Murtaz1, H. Meng and W. Huang, “Anthracene-based semiconductors for organic field-effect transistors,” Journal of Materials Chemistry C, vol. 6, no. 28, pp. 7416-7444, 2018.
24. [24] R. Katoh and M. Kotani, “Observation of singlet exciton photoionization in anthracene single crystal at 2.95 eV”, Chemical Physics Letters, vol. 166, no. 3, pp. 258-262, 1990.