28.2%-efficient, outdoor-stable perovskite/silicon tandem solar cell

Efficient and stable perovskite-silicon tandem solar cells through contact displacement by MgF x

“…ntegrating high-performance wide-bandgap perovskite solar cells onto silicon solar cells can lead to very high power conversion efficiencies (PCEs) by minimizing carrier thermalization losses (1)(2)(3)(4)(5)(6). Although initial research explored n-i-p tandems, recent work has focused on the p-i-n configuration, in which the n-type electron-collecting contact faces sunward (7)(8)(9), and on improving performance through device optics and optimizing perovskite composition (10)(11)(12)(13)(14)(15). More recently, attention has turned to the interface between the perovskite and the hole transport layer (HTL) to reduce voltage losses.…”

CsPbCl3‐Cluster‐Widened Bandgap and Inhibited Phase Segregation in a Wide‐Bandgap Perovskite and its Application to NiOx‐Based Perovskite/Silicon Tandem Solar Cells

“…Thin-film halogenated perovskites (hereafter referred to as perovskites) based on organic-inorganic (hybrid) components are by PTAA, SAMs, and poly-TPD, are mainly used as hole-transport layer materials in perovskite/silicon tandem systems, with relatively few inorganic materials, such as NiO x , reported. [2,[4][5][6]8,23] Indeed, the following issues have been reported for inorganic NiO x hole-transport layers: the presence of highly oxidizable Ni 3+ in NiO x redox-reacts with I − at the NiO x /perovskite interface, leading to perovskite decomposition at the interface, which affects the open-circuit voltage (V OC ) of the device. [14,17,24] Recent studies have aimed to mitigate this phenomenon through the use of isolating layers or eliminating Ni 3+ on the surface of the NiO x layer.…”

“…[2] Wide-bandgap perovskites used in perovskite/silicon tandem systems reported to date typically contain more than 20% Br, which leads to inevitable phase separation. [3][4][5][6][7][8][9] Many studies into single-junction solar cells have shown that the performance of a wide-bandgap mixed halide perovskite is limited by its relatively low photovoltage. [10][11][12][13] Although various methods have been proposed to suppress phase segregation, the power conversion efficiencies (PCEs) of devices, especially those based on nickel oxide (NiO x ) as the hole layer, need to be further improved.…”

Numerical Investigation of Photo Generated Carrier Recombination Dynamics on the Device Characteristics for the Perovskite/Carbon Nitride Absorber Layer Solar Cell

“…Presently photovoltaic modules based on wafer-based crystalline silicon solar cells account for > 90% of the global photovoltaic market [1][2][3][4][5]. Laudable enhancement in power conversion efficiency (η) has been experienced for this technology over the last few years leading to the thin film, tandem, and various lab-based architectures [6][7][8][9][10][11][12][13]. On top of that, the manufacturing process of crystalline-based solar modules requires expensive materials and production costs.…”