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Characteristic Performance of OLED Based on Hole Injection, Transport and Blocking Layers

Author(s):

Shubham Negi, Poornima Mittal* and Brijesh Kumar   Pages 1 - 11 ( 11 )

Abstract:


Background: Organic Light Emitting Diodes have emerged as a potential candidate for being used as the display because of their remarkable performance. In the past decade, a lot of interest was shown in their development and improvement. Scientists utilized different methods for enhancing their performance which included the change in OLEDs architecture. Different supporting layers (charge injection, transportation and blocking) were added in the architecture to enhance the performance of OLED. Some of the patents related to the application of the OLED have also been reviewed so see the applicability of the present work in those applications.

Objective: The motive of this research article is to study impacts of these layers on the performance of OLED. Method: The objective was achieved by systematically analyzing impact of different layers on the OLED. The analysis process commenced by investigating the properties of the basic OLED consisting of the emission layer only. Thereafter, in succession different supporting layers were added to the OLED architecture. Subsequently, after adding each layer, OLED device was analyzed and its properties were determined. Finally, their performance was compared.

Results: The outcome of the above research study showed that these supporting layers were significantly able to enhance the performance of the OLED. Step by step layers were added to the architecture and the performance improved. There was improvement of 13% to 38% not over the basic OLED architecture, but over the multilayered OLED device, which was already far better than basic OLED.

Conclusion: Therefore, from the study it can be concluded that the different layers are significant for the OLED architecture and improves the performance of the OLED considerably.

Keywords:

Hole Transport Layer (HTL), Electron Transport Layer (ETL), Hole Block Layer (HBL), Electron Block Layer (EBL), Organic Light Emitting Diode (OLED)

Affiliation:

Department of Electronic and Communication Engineering, Graphic Era (Deemed to be University), Dehradun, Department of Electronics and Communication Engineering, Delhi Technological University, New Delhi, Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur



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