Details

Autor(en) / Beteiligte

• Hou, Yi
• Du, Xiaoyan
• Scheiner, Simon
• McMeekin, David P.
• Wang, Zhiping
• Li, Ning
• Killian, Manuela S.
• Chen, Haiwei
• Richter, Moses
• Levchuk, Ievgen
• Schrenker, Nadine
• Spiecker, Erdmann
• Stubhan, Tobias
• Luechinger, Norman A.
• Hirsch, Andreas
• Schmuki, Patrik
• Steinrück, Hans-Peter
• Fink, Rainer H.
• Halik, Marcus
• Snaith, Henry J.
• Brabec, Christoph J.

Titel

A generic interface to reduce the efficiency-stability-cost gap of perovskite solar cells

Ist Teil von

• Science (American Association for the Advancement of Science), 2017-12, Vol.358 (6367), p.1192-1197

Ort / Verlag

United States: American Association for the Advancement of Science

Erscheinungsjahr

2017

Quelle

American Association for the Advancement of Science

Beschreibungen/Notizen

• A major bottleneck delaying the further commercialization of thin-film solar cells based on hybrid organohalide lead perovskites is interface loss in state-of-the-art devices. We present a generic interface architecture that combines solution-processed, reliable, and cost-efficient hole-transporting materials without compromising efficiency, stability, or scalability of perovskite solar cells. Tantalum-doped tungsten oxide (Ta-WOₓ)/conjugated polymer multilayers offer a surprisingly small interface barrier and form quasi-ohmic contacts universally with various scalable conjugated polymers. In a simple device with regular planar architecture and a self-assembled monolayer, Ta-WOₓ–doped interface–based perovskite solar cells achieve maximum efficiencies of 21.2% and offer more than 1000 hours of light stability. By eliminating additional ionic dopants, these findings open up the entire class of organics as scalable hole-transporting materials for perovskite solar cells.