Δημοσιεύσεις

Project Acronym: SPOx
Title: Ab initio studies on the properties of oxides and multiferroic materials
Affiliation: national technical university of athens
Pi: Leonidas Tsetseris
Research Field: chemical sciences and materials

Self-assembled Monolayer Enables HTL-free Organic Solar Cells with 18% Efficiency and Improved Operational Stability
by yuanbao lin, Yuliar Firdaus, Furkan H Isikgor, Mohamad Insan Nugraha, Emre Yengel, George T Harrison, Rawad Hallani, Abdulrahman El Labban, Hendrik Faber, Chun Ma, Xiaopeng Zheng, Anand Selvin Subbiah, Calvyn T Howells, Osman M. Bakr, Iain McCulloch, Stefaan De Wolf, Leonidas Tsetseris, and Thomas D. Anthopoulos
Abstract:
We report on bulk-heterojunction (BHJ) organic photovoltaics (OPVs) using the self-assembled monolayer (SAM) 2PACz as a hole-selective interlayer functionalized directly onto the indium tin oxide (ITO) anode. The 2PACz is found to change the work function of ITO while simultaneously affecting the morphology of the BHJ deposited atop. Cells with PM6:N3 BHJ and ITO-2PACz anode exhibit a power conversion efficiency (PCE) of 16.6%, which is higher than that measured for bare ITO (6.45%) and ITO/PEDOT:PSS (15.94%) based devices. The enhanced performance is attributed to lower contact-resistance, reduced bimolecular recombination losses, and improved charge transport within the BHJ. Importantly, the ITO-2PACz-based OPVs show a dramatically improved operational stability when compared with PEDOT:PSS-based cells. When the ITO-2PACz anode is combined with the ternary PM6:BTP-eC9:PC71BM BHJ, the resulting cells exhibit a maximum PCE of 18.03%, further highlighting the potential of engineered SAMs for use in hole-selective contacts in high-performance OPVs.
Reference:
Self-assembled Monolayer Enables HTL-free Organic Solar Cells with 18% Efficiency and Improved Operational Stability (yuanbao lin, Yuliar Firdaus, Furkan H Isikgor, Mohamad Insan Nugraha, Emre Yengel, George T Harrison, Rawad Hallani, Abdulrahman El Labban, Hendrik Faber, Chun Ma, Xiaopeng Zheng, Anand Selvin Subbiah, Calvyn T Howells, Osman M. Bakr, Iain McCulloch, Stefaan De Wolf, Leonidas Tsetseris, and Thomas D. Anthopoulos), In ACS Energy Letters, volume in press, 2020.
Bibtex Entry:
@article{doi:10.1021-acsenergylett.0c01421,
 author = {yuanbao lin, Yuliar Firdaus, Furkan H Isikgor, Mohamad Insan Nugraha, Emre Yengel, George T Harrison, Rawad Hallani, Abdulrahman El Labban, Hendrik Faber, Chun Ma, Xiaopeng Zheng, Anand Selvin Subbiah, Calvyn T Howells, Osman M. Bakr, Iain McCulloch, Stefaan De Wolf, Leonidas Tsetseris, and Thomas D. Anthopoulos},
 doi = {10.1021/acsenergylett.0c01421},
 url = {https://doi.org/10.1021/acsenergylett.0c01421},
 year = {2020},
 bibyear = {2020},
 journal = {ACS Energy Letters},
 volume = {in press},
 title = {Self-assembled Monolayer Enables HTL-free Organic Solar Cells with 18% Efficiency and Improved Operational Stability},
 abstract = {We report on bulk-heterojunction (BHJ) organic photovoltaics (OPVs) using the self-assembled monolayer (SAM) 2PACz as a hole-selective interlayer functionalized directly onto the indium tin oxide (ITO) anode. The 2PACz is found to change the work function of ITO while simultaneously affecting the morphology of the BHJ deposited atop. Cells with PM6:N3 BHJ and ITO-2PACz anode exhibit a power conversion efficiency (PCE) of 16.6%, which is higher than that measured for bare ITO (6.45%) and ITO/PEDOT:PSS (15.94%) based devices. The enhanced performance is attributed to lower contact-resistance, reduced bimolecular recombination losses, and improved charge transport within the BHJ. Importantly, the ITO-2PACz-based OPVs show a dramatically improved operational stability when compared with PEDOT:PSS-based cells. When the ITO-2PACz anode is combined with the ternary PM6:BTP-eC9:PC71BM BHJ, the resulting cells exhibit a maximum PCE of 18.03%, further highlighting the potential of engineered SAMs for use in hole-selective contacts in high-performance OPVs.},
}