Multi Junction Solar Cells Stacked with Transparent and Conductive Adhesive

Toshiyuki Sameshima, Jun Takenezawa, Masahiko Hasumi, Takashi Koida, Tetsuya Kaneko, Minoru Karasawa, Michio Kondo
2011 Japanese Journal of Applied Physics  
We propose a polyimide transparent adhesive layer dispersed with In 2 O 3 -SnO 2 (ITO) conductive particles (polyimide-ITO) to be used in the mechanical stacking of solar cells. A 20-m-thick polyimide-ITO layer had a high transmissivity from 78 to 80% for wavelengths ranging from 500 to 1000 nm and a low connecting resistivity of 2.3 cm 2 at minimum. The fabrication of stacked cell consisting of a top hydrogenated amorphous silicon (a-Si:H) p-i-n cell and a bottom hetero-junction with an
more » ... ic thin-layer (HIT)-type silicon cell was demonstrated using an intermediate polyimide-ITO layer. A high open circuit voltage of 1.34 V was experimentally obtained. Simultaneous electric power generation from the top and bottom solar cells was achieved. #
doi:10.1143/jjap.50.052301 fatcat:xcordpkgyzdypcgklpqmmpzuzu