Perovskite Photovoltaic Devices: Enhancing the Open‐Circuit Voltage of Perovskite Solar Cells by up to 120 mV Using π‐Extended Phosphoniumfluorene Electrolytes as Hole Blocking Layers (Adv. Energy Mater. 33/2019). Issue 33 (5th September 2019)

• Record Type: Journal Article
• Authors: An, Qingzhi; Sun, Qing; Weu, Andreas; Becker‐Koch, David; Paulus, Fabian; Arndt, Sebastian; Stuck, Fabian; Hashmi, A. Stephen K.; Tessler, Nir; Vaynzof, Yana
• Is Part Of: Advanced energy materials. Volume 9:Issue 33(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-09-05
• Subjects: electrolytes -- hole‐blocking layers -- interfacial engineering -- perovskite solar cells; Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.201970126
• Languages: English
• ISSNs: 1614-6832

Abstract

Abstract : In article number 1901257, Yana Vaynzof and co‐workers introduce π‐extended phosphoniumfluorene electrolytes as hole‐blocking layers in planar perovskite solar cells. The electrolytes drastically alter the energetic landscape of the device, introducing a strong dipole between the fullerene electron extraction layer and the silver electrode. This results in a substantial enhancement in the built‐in potential of the device, increasing its open‐circuit voltage by up to 120 meV.