• 文献标题:   Graphene with Ni-Grid as Semitransparent Electrode for Bulk Heterojunction Solar Cells (BHJ-SCs)
  • 文献类型:   Article
  • 作  者:   DIANETTI M, SUSANNA G, CALABRO E, POLINO G, OTTO M, NEUMAIER D, REALE A, BRUNETTI F
  • 作者关键词:   graphene based solar cell, tcofree solar cell, chemical vapour deposition cvd, low bandgap, bulkheterojunction solar cell, nigrid, mlg
  • 出版物名称:   POLYMERS
  • ISSN:  
  • 通讯作者地址:  
  • 被引频次:   1
  • DOI:   10.3390/polym14051046
  • 出版年:   2022

▎ 摘  要

In this work, we present the fabrication and characterization of bulk-heterojunction solar cells on monolayer graphene (MLG) with nickel-grids (Ni-grid) as semitransparent conductive electrode. The electrodes showed a maximum transmittance of 90% (calculated in 300-800 nm range) and a sheet resistance down to 35 omega/. On these new anodes, we fabricated TCO free BHJ-SCs using PTB7 blended with PC70BM fullerene derivative as active layer. The best device exhibited a power conversion efficiency (PCE) of 4.2% in direct configuration and 3.6% in inverted configuration. The reference solar cell, realized on the ITO glass substrate, achieved a PCE of 6.1% and 6.7% in direct and inverted configuration respectively; for comparison we also tested OSCs only with simple Ni-grid as semitransparent and conductive electrode, obtaining a low PCE of 0.7%. The proposed approach to realize graphene-based electrodes could be a possible route to reduce the overall impact of the sheet resistance of this type of electrodes allowing their use in several optoelectronic devices.