A series connection architecture for large-area organic photovoltaic modules with a 7.5% module efficiency

作者：Hong Soonil; Kang Hongkyu; Kim Geunjin; Lee Seongyu; Kim Seok; Lee Jong Hoon; Lee Jinho; Yi Minjin; Kim Junghwan; Back Hyungcheol; Kim Jae Ryoung; Lee Kwanghee

来源：Nature Communications, 2016, 7(1): 10279.

DOI：10.1038/ncomms10279

<jats:title>Abstract</jats:title><jats:p>The fabrication of organic photovoltaic modules via printing techniques has been the greatest challenge for their commercial manufacture. Current module architecture, which is based on a monolithic geometry consisting of serially interconnecting stripe-patterned subcells with finite widths, requires highly sophisticated patterning processes that significantly increase the complexity of printing production lines and cause serious reductions in module efficiency due to so-called aperture loss in series connection regions. Herein we demonstrate an innovative module structure that can simultaneously reduce both patterning processes and aperture loss. By using a charge recombination feature that occurs at contacts between electron- and hole-transport layers, we devise a series connection method that facilitates module fabrication without patterning the charge transport layers. With the successive deposition of component layers using slot-die and doctor-blade printing techniques, we achieve a high module efficiency reaching 7.5% with area of 4.15 cm<jats:sup>2</jats:sup>.</jats:p>

• 出版日期2016-1