Abstract
AbstractInGaN‐based solar cells have been investigated through fabrication with and without using an indium‐tin‐oxide (ITO) current spreading layer (CSL). For the devices with a planar top surface, utilization of the ITO CSL leads to enhanced performance under 1 sun air‐mass 1.5 global spectrum illumination. In contrast, when surface‐texturing is applied to significantly improve the light absorption, the efficiency of the device without using the ITO CSL is higher compared to the one with the ITO. Furthermore, measurements on reflectance of the corresponding surfaces and transmission of the ITO CSL are carried out. The influence of the ITO CSL has been discussed in terms of surface reflection, the light loss due to the ITO CSL shading and the power loss associated with the absence of the ITO CSL. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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