Berlin 2018 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 61: Focus: Fundamental Physics of Perovskites II - organized by Lukas Schmidt-Mende and Vladimir Dyakonov

CPP 61.10: Vortrag

Donnerstag, 15. März 2018, 12:30–12:45, C 130

Self-assembled Monolayers Enhance the Stability and Efficiency of p-i-n Perovskite Solar Cells — •Christian Wolff¹, Martin Stolterfoht¹, Yohai Amir¹, Antonio Abate², and Dieter Neher¹ — ¹Institut für Physik und Astronomie, Universität Potsdam, Potsdam, 14476, DE — ²Institut für Silizium-Photovoltaik, Helmholtz-Zentrum Berlin für Materialien und Energie,12489 Berlin, DE

Perovskite solar cells with all-organic transport layers have shown efficiencies rivalling their counterparts that employ high temperature treated inorganic transport layers [1,2,3]. One of the main issues associated with perovskite solar cells is their instability, in particular towards long periods of illumination or moisture and closely related the lack of control of the nature and electronic structure of the interface between the active perovskite and the adjacent transport layers. In this contribution we show that in p-i-n cells interjection of a self-assembling monolayer between the perovskite and the adjacent electron transport layer allows us to produce solar cells with efficiencies above 20% on small areas (6 mm2) as well as 1 cm2 with almost no loss by scaling. Importantly, these cells exhibit enhanced resilience towards heat and light illumination as exemplary shown by keeping the solar cells at 85°C under full load (MPP, simulated 1 sun illumination) for 250h without appreciable efficiency loss.

[1] Wolff et al., Adv.Mater., 2017, 29, 1700159 [2] Stolterfoht et al., Energy and Environ. Sci., 2017, 10, 1530-1539 [3] Zheng et al., Nat. Energy, 2017, 2, 17102