Triple-junction perovskite-perovskite-silicon solar cells with power conversion efficiency of 24.4%

authored by

Hang Hu, Sophie X. An, Yang Li, Seyedamir Orooji, Roja Singh, Fabian Schackmar, Felix Laufer, Qihao Jin, Thomas Feeney, Alexander Diercks, Fabrizio Gota, Somayeh Moghadamzadeh, Ting Pan, Michael Rienäcker, Robby Peibst, Bahram Abdollahi Nejand, Ulrich W. Paetzold

Abstract

The recent tremendous progress in monolithic perovskite-based double-junction solar cells is just the start of a new era of ultra-high-efficiency multi-junction photovoltaics. We report on triple-junction perovskite-perovskite-silicon solar cells with a record power conversion efficiency of 24.4%. Optimizing the light management of each perovskite sub-cell (∼1.84 and ∼1.52 eV for top and middle cells, respectively), we maximize the current generation up to 11.6 mA cm⁻². Key to this achievement was our development of a high-performance middle perovskite sub-cell, employing a stable pure-α-phase high-quality formamidinium lead iodide perovskite thin film (free of wrinkles, cracks, and pinholes). This enables a high open-circuit voltage of 2.84 V in a triple junction. Non-encapsulated triple-junction devices retain up to 96.6% of their initial efficiency if stored in the dark at 85 °C for 1081 h.

Organisation(s)

Institute of Electronic Materials and Devices

External Organisation(s)

Karlsruhe Institute of Technology (KIT)
Institute for Solar Energy Research (ISFH)

Type

Article

Journal

Energy and Environmental Science

Volume

17

Pages

2800-2814

No. of pages

15

ISSN

1754-5692

Publication date

13.02.2024

Publication status

E-pub ahead of print

Peer reviewed

Yes

ASJC Scopus subject areas

Environmental Chemistry, Renewable Energy, Sustainability and the Environment, Nuclear Energy and Engineering, Pollution

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1039/d3ee03687a (Access: Open)