Improvement of carrier distribution by using thinner quantum well with different location

Sheng-Wen Wang; Da-Wei Lin; Chia-Yu Lee; Chien-Chung Lin; Hao-Chung Kuo

doi:10.1117/12.2038402

27 February 2014 Improvement of carrier distribution by using thinner quantum well with different location

Sheng-Wen Wang, Da-Wei Lin, Chia-Yu Lee, Chien-Chung Lin, Hao-Chung Kuo

Proceedings Volume 9003, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XVIII; 90030F (2014) https://doi.org/10.1117/12.2038402
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

We use thinner-quantum well to improve the droop behavior of GaN-base light emitting diode in simulation. Taking the advantage of that the thin quantum well will saturate easily, this characteristic of thin well will improve carrier distribution. Furthermore, this structure has more wave-function overlap than that of the thick well. This simulation result showed that decreasing the well thickness in specific position will not only improve the holes transport but also increase the quantum efficiency at high current density in the active region, and the efficiency droop behavior can be effectively suppressed. In this research, we designed three thin well structures by inserting different numbers of thin wells in the active region. We have compared them to the conventional LEDs, for which, the well thickness of 2.5 nm is used. The thin well structures have better droop behavior than conventional LED.

Citation Download Citation

Sheng-Wen Wang, Da-Wei Lin, Chia-Yu Lee, Chien-Chung Lin, and Hao-Chung Kuo "Improvement of carrier distribution by using thinner quantum well with different location", Proc. SPIE 9003, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XVIII, 90030F (27 February 2014); https://doi.org/10.1117/12.2038402

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available