OSA's Digital Library

Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 6 — Mar. 12, 2012
  • pp: 5936–5941

Optics InfoBase > Optics Express > Volume 20 > Issue 6 > Page 5936

Ultraviolet photodetector with high internal gain enhanced by TiO2/SrTiO3 heterojunction

Min Zhang, Haifeng Zhang, Kaibo Lv, Weiyou Chen, Jingran Zhou, Liang Shen, and Shengping Ruan  »View Author Affiliations


Optics Express, Vol. 20, Issue 6, pp. 5936-5941 (2012)
http://dx.doi.org/10.1364/OE.20.005936


View Full Text Article

Enhanced HTML    Acrobat PDF (1207 KB)


Advanced Search

Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

In this letter, TiO2 nanocrystalline film was prepared on SrTiO3 (001) substrate to form an n-n heterojunction active layer. Interdigitated Au electrodes were deposited on the top of TiO2 film to fabricate modified HMSM (heterojunction metal-semiconductor-metal) ultraviolet photodetector. At 10 V bias, the dark current of the detector was only 0.2 nA and the responsivity was 46.1 A/W at 260 nm. The rise and fall times of the device were 3.5 ms and 1.4 s, respectively. The TiO2/SrTiO3 heterojunction contributed a lot to the high responsivity and reduced the fall time, which improved the device performance effectively. These results demonstrate the excellent application of TiO2/SrTiO3 heterojunction in fabricating high performance UV photodetectors.

© 2012 OSA

OCIS Codes
(040.5160) Detectors : Photodetectors
(250.0250) Optoelectronics : Optoelectronics

ToC Category:
Detectors

History
Original Manuscript: December 9, 2011
Revised Manuscript: February 9, 2012
Manuscript Accepted: February 14, 2012
Published: February 27, 2012

Citation
Min Zhang, Haifeng Zhang, Kaibo Lv, Weiyou Chen, Jingran Zhou, Liang Shen, and Shengping Ruan, "Ultraviolet photodetector with high internal gain enhanced by TiO2/SrTiO3 heterojunction," Opt. Express 20, 5936-5941 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-6-5936


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. H. Xue, X. Kong, Z. Liu, C. Liu, J. Zhou, W. Chen, S. Ruan, and Q. Xu, “TiO2 based metal-semiconductor-metal ultraviolet photodetectors,” Appl. Phys. Lett.90(20), 201118 (2007). [CrossRef]
  2. H. Zhang, S. Ruan, T. Xie, C. Feng, P. Qu, W. Chen, and W. Dong, “Zr0.27Ti0.73O2-Based MSM ultraviolet detectors with Pt electrodes,” IEEE Electron Device Lett.32(5), 653–655 (2011). [CrossRef]
  3. M. L. Lee, T. S. Mue, F. W. Huang, J. H. Yang, and J. K. Sheu, “High-performance GaN metal-insulator-semiconductor ultraviolet photodetectors using gallium oxide as gate layer,” Opt. Express19(13), 12658–12663 (2011). [CrossRef] [PubMed]
  4. A. Vert, S. Soloviev, J. Fronheiser, and P. Sandvik, “Solar-blind 4H-SiC single-photon avalanche diode operating in Geiger mode,” IEEE Photon. Technol. Lett.20(18), 1587–1589 (2008). [CrossRef]
  5. W. Dai, Q. Yang, F. Gu, and L. Tong, “ZnO subwavelength wires for fast-response mid-infrared detection,” Opt. Express17(24), 21808–21812 (2009). [CrossRef] [PubMed]
  6. X. Kong, C. Liu, W. Dong, X. Zhang, C. Tao, L. Shen, J. Zhou, Y. Fei, and S. Ruan, “Metal-semiconductor-metal TiO2 ultraviolet detectors with Ni electrodes,” Appl. Phys. Lett.94(12), 123502 (2009). [CrossRef]
  7. J. Xing, E. Guo, K. J. Jin, H. Lu, J. Wen, and G. Yang, “Solar-blind deep-ultraviolet photodetectors based on an LaAlO3 single crystal,” Opt. Lett.34(11), 1675–1677 (2009). [CrossRef] [PubMed]
  8. J. Xing, K. Zhao, H. B. Lu, X. Wang, G. Z. Liu, K. J. Jin, M. He, C. C. Wang, and G. Z. Yang, “Visible-blind, ultraviolet-sensitive photodetector based an SrTiO3 single crystal,” Opt. Lett.32(17), 2526–2528 (2007). [CrossRef] [PubMed]
  9. W. Yang, R. D. Vispute, S. Choopun, R. P. Sharma, T. Venkatesan, and H. Shen, “Ultraviolet photoconductive detector based on epitaxial Mg0.34Zn0.66O thin films,” Appl. Phys. Lett.78(18), 2787–2789 (2001). [CrossRef]
  10. Z. Sheng, L. Liu, J. Brouckaert, S. L. He, and D. Van Thourhout, “InGaAs PIN photodetectors integrated on silicon-on-insulator waveguides,” Opt. Express18(2), 1756–1761 (2010). [CrossRef] [PubMed]
  11. S. Zhang, W. Wang, I. Shtau, F. Yun, L. He, H. Morkoc, X. Zhou, M. Tamargo, and R. R. Alfano, “Backilluminated GaN/AlGaN heterojunction ultraviolet photodetector with high internal gain,” Appl. Phys. Lett.81(25), 4862–4864 (2002). [CrossRef]
  12. B. Nabet, “A heterojunction metal-semiconductor-metal photodetector,” IEEE Photon. Technol. Lett.9(2), 223–225 (1997). [CrossRef]
  13. J. Zhang, J. H. Bang, C. Tang, and P. V. Kamat, “Tailored TiO2-SrTiO3 heterostructure nanotube arrays for improved photoelectrochemical performance,” ACS Nano4(1), 387–395 (2010). [CrossRef] [PubMed]
  14. Y. Diamant, S. Chen, O. Melamed, and A. Zaban, “Core-shell nanoporous electrode for dye sensitized solar cells: the effect of the SrTiO3 shell on the electronic properties of the TiO2 core,” J. Phys. Chem. B107(9), 1977–1981 (2003). [CrossRef]
  15. H. Xue, W. Chen, C. Liu, X. Kong, P. Qu, Z. Liu, J. Zhou, L. Shen, Z. Zhong, and S. Ruan, “Fabrication of TiO2 Schottky barrier diodes by RF magnetron sputtering,” in Proceedings of IEEE Conference on Nano/Micro Engineered and Molecular Systems (IEEE, Sanya, China, 2008), pp. 108–111.
  16. U. Diebold, N. Ruzycki, G. S. Herman, and A. Selloni, “One step towards bridging the materials gap: surface studies of TiO2 anatase,” Catal. Today85(2-4), 93–100 (2003). [CrossRef]
  17. O. Katz, V. Garber, B. Meyler, G. Bahir, and J. Salzman, “Gain mechanism in GaN Schottky ultraviolet detectors,” Appl. Phys. Lett.79(10), 1417–1419 (2001). [CrossRef]
  18. J. W. Little, S. P. Svensson, W. A. Beck, A. C. Goldberg, S. W. Kennerly, T. Hongsmatip, M. Winn, and P. Uppal, “Thin active region, type II superlattice photodiode arrays: Single-pixel and focal plane array characterization,” J. Appl. Phys.101(4), 044514 (2007). [CrossRef]
  19. S. M. Sze, Physics of Semiconductor Devices, 2nd ed. (Wiley, 1981), Chap. 13.
  20. K. Schwarzburg and F. Willig, “Influence of trap filling on photocurrent transients in polycrystalline TiO2,” Appl. Phys. Lett.58(22), 2520–2522 (1991). [CrossRef]
  21. K. M. Kim, B. J. Choi, M. H. Lee, G. H. Kim, S. J. Song, J. Y. Seok, J. H. Yoon, S. Han, and C. S. Hwang, “A detailed understanding of the electronic bipolar resistance switching behavior in Pt/TiO2/Pt structure,” Nanotechnology22(25), 254010 (2011). [CrossRef] [PubMed]
  22. I. P. Raevski, S. M. Maksimov, A. V. Fisenko, S. A. Prosandeyev, I. A. Osipenko, and P. F. Tarasenko, “Study of intrinsic point defects in oxides of the perovskite family: II. Experiment,” J. Phys. Condens. Matter10(36), 8015–8032 (1998). [CrossRef]

Cited By

 Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

Figures

Fig. 1 Fig. 2 Fig. 3
 
Fig. 4
 

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited