EU PVSEC Programme Online
EU PVSEC 2019, 9 - 13 September 2019, Marseille
Presentation: 2AO.6.6 Highly Efficient Transparent a-Si:H Solar Cells for Light Harvesting under Indoor Illumination using Collection Enhancing Layer
Type: Oral
Date: Monday, 9th September 2019
17:00 - 18:30
Location / Room: Marseille Chanot Convention and Exhibition Centre, Garden Level / Auditorium 4 Endoume 1+2
Author(s): G. Kim, M.A. Park, S.H. Jang, M. Shin, J.W. Lim
Presenter / Speaker: J.W. Lim, ETRI, Daejeon, Korea, Republic of
Event: Conference Conference
Session: 2AO.6 Thin Silicon Solar Cells
Type(s) of Access:  Conference Registration
Topic: 2. 4 Thin Film and Foil-Based Si Solar Cells
Summary / Abstract: Recently, indoor energy harvesting technology has received considerable attention as a remote power source for Internet of Things (IoT) devices [1-2]. In IoT applications, wired power connections to many individual IoT devices is not practical. As with solar cells, if the remote energy harvester operates independently and does not have a large battery, but can supply enough power for operation, then permanent operation of an IoT device is possible and no physical power line is required. Amorphous silicon (a-Si:H) solar cells have optical bandgaps of approximately 1.7 eV, and absorb visible light (350–800 nm) well, making a-Si:H solar cells suitable for generating electricity from indoor light sources such as light-emitting diodes (LED) and fluorescent lamps [3]. Therefore, a-Si:H cells can be used as power sources for IoT devices by harvesting indoor light energy. Among many IoT devices, transparent IoT devices incorporating transparent electronic devices, such as transparent touch screens and displays, are being developed. In addition, it is required to apply a transparent solar cells for aesthetic effect, and our research group has studied transparent solar cells for application to building windows [4-5]. However, for indoor photovoltaics, there have been little studies on the optimized structures for transparent solar cells.