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Highly Efficient Phosphorescent Organic Light Emitting Diodes on Cellulose

Purandare, Sumit
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396532894

Abstract Details

2014, MS, University of Cincinnati, Engineering and Applied Science: Electrical Engineering.
Conventionally organic light emitting diodes (OLED) are fabricated on glass substrate and a vast majority of literature on high efficiency OLEDs is present. However, there is a growing amount of literature that demonstrates OLED flexibility, which is one of the biggest advantage that OLEDs have over conventional light emitting technology. The ability of OLEDs being completely flexible and biodegradable can be best exploited by fabricating it on a substrate that exhibits both of the above mentioned qualities. This research focuses on highly efficient OLEDs using a phosphorescent emitter fabricated onto transparent cellulose substrates. These cellulose substrates were synthesized by dissolution of cellulose in an organic solvent (di-methyl-acetamide) at elevated temperature (165°C) in the presence of a salt (LiCl). The transparent cellulose substrate has excellent properties in terms of transmission (Avg. 85%) and surface roughness (Avg. 4.4 nm) which enabled the fabrication of OLEDs. Current and luminous emission efficiency as high as 47 cd/A and 20 lm/W were achieved along with a maximum brightness of 10,000 cd/m2. The capability of fabricating OLEDs onto cellulose substrate makes it an excellent choice for low cost, flexible and biodegradable displays in the future.
Andrew Steckl, Ph.D. (Committee Chair)
Chong Ahn, Ph.D. (Committee Member)
Gregory Beaucage, Ph.D. (Committee Member)
65 p.
Electrical Engineering
OLED; Flexible; HIgh Efficiency; Phosphorescent; Cellulose; paper electronics

Recommended Citations

Citations

  • Purandare, S. (2014). Highly Efficient Phosphorescent Organic Light Emitting Diodes on Cellulose [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396532894

    APA Style (7th edition)

  • Purandare, Sumit. Highly Efficient Phosphorescent Organic Light Emitting Diodes on Cellulose. 2014. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396532894.

    MLA Style (8th edition)

  • Purandare, Sumit. "Highly Efficient Phosphorescent Organic Light Emitting Diodes on Cellulose." Master's thesis, University of Cincinnati, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396532894

    Chicago Manual of Style (17th edition)

ucin1396532894
406
© 2014, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.