Triple-junction perovskite–perovskite–silicon solar cells with power conversion efficiency of 24.4%
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
. 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.
Topics & Concepts
Perovskite (structure)PhotovoltaicsMaterials scienceTriple junctionEnergy conversion efficiencySiliconOptoelectronicsEngineering physicsPhotovoltaic systemElectrical engineeringChemical engineeringEngineeringPerovskite Materials and ApplicationsChalcogenide Semiconductor Thin Filmssolar cell performance optimization