Graphite distributed electrodes for diamond-based photon-enhanced thermionic emission solar cells

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• 作者：Marco Girolami^a ; ^{marco.girolami@ism.cnr.it" class="auth_mail" title="E-mail the corresponding author} ; Luigino Criante^b ; Fabio Di Fonzo^b ; Sara Lo Turco^b ; Alessandro Mezzetti^b ; Andrea Notargiacomo^c ; Marialilia Pea^c ; Alessandro Bellucci^a ; Paolo Calvani^a ; Veronica Valentini^a ; Daniele M. Trucchi^a
• 刊名：Carbon
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：111
• 期：Complete
• 页码：48-53
• 全文大小：1318 K

文摘

Graphite conductive vertical microchannels, fabricated by femtosecond laser treatment, are proposed as distributed electrodes in defect-engineered (“black”) single-crystal diamond cathodes for innovative solar cells. Energy conversion is based on photon-enhanced thermionic emission, where the reduction of the cathode series resistance is crucial to preserve conversion efficiency. Process yield higher than 80% and resistivity as low as 0.75 ± 0.15 Ω cm were achieved by the optimization of laser parameters and the use of a multi-pass writing technique. A 100 × 100 array of graphite electrodes was integrated in a diamond-based cathode prototype, reducing the series resistance of more than 10 orders of magnitude with respect to bulk diamond.