TY - JOUR
T1 - Analytical treatment of light extraction from textured surfaces using classical ray optics
AU - Kumar, Purushottam
AU - Son, Seung Young
AU - Singh, Rohit
AU - Balasundaram, Kannan
AU - Lee, Jaeseok
AU - Singh, Rajiv
PY - 2011/9/15
Y1 - 2011/9/15
N2 - Regular periodic textures e.g., microlens arrays, micro-pyramids, and cones on substrate surface have been used to enhance light out-coupling in light emitting devices. Photon randomization, often associated with surface roughening, has been suggested as the mechanism for out-coupling enhancement. This article analytically investigates the ray dynamics in a light emitting device when periodic texture is used as an external out-coupler. An attempt has been made to understand the relationship between enhancement in out-coupling and the surface inclination of these structures using classical ray optics.
AB - Regular periodic textures e.g., microlens arrays, micro-pyramids, and cones on substrate surface have been used to enhance light out-coupling in light emitting devices. Photon randomization, often associated with surface roughening, has been suggested as the mechanism for out-coupling enhancement. This article analytically investigates the ray dynamics in a light emitting device when periodic texture is used as an external out-coupler. An attempt has been made to understand the relationship between enhancement in out-coupling and the surface inclination of these structures using classical ray optics.
KW - Classical ray optics
KW - Light emitting devices
KW - Light out-coupling
KW - Ray tracing
UR - http://www.scopus.com/inward/record.url?scp=80051581186&partnerID=8YFLogxK
U2 - 10.1016/j.optcom.2011.06.062
DO - 10.1016/j.optcom.2011.06.062
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AN - SCOPUS:80051581186
SN - 0030-4018
VL - 284
SP - 4874
EP - 4878
JO - Optics Communications
JF - Optics Communications
IS - 20
ER -