Minimizing Current and Voltage Losses to Reach 25% Efficient Monolithic Two-Terminal Perovskite–Silicon Tandem Solar Cells
By Kevin A. Bush, Salman Manzoor, Kyle Frohna, Zhengshan J. Yu, James A. Raiford, A. Palmstrom, Hsin‐Ping Wang, R. Prasanna, S. Bent, Z. Holman and 1 more. ACS Energy Letters, 2018
215 citations recorded by the source corpus.
The rapid rise in efficiency and tunable bandgap of metal-halide perovskites makes them highly attractive for use in tandems on silicon. Recently we demonstrated a perovskite–silicon monolithic two-terminal tandem with 23.6% power conversion efficiency. Here, we present work on optical optimization to improve light harvesting that includes thinning out the top transparent electrode to reduce front-surface reflection and parasitic absorption; introducing metal fingers to minimize series resistance losses; and further minimizing reflection loss with a polydimethylsiloxane (PDMS) stamp with random, pyramidal texture. Additionally, to reduce voltage loss while achieving current matching, we employ poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) as a hole transport material instead of NiOx and a wider 1.68 eV bandgap perovskite composition. These optimizations boost the open-circuit voltage to 1.77 V and the short-circuit current density to 18.4 mA/cm2, culminating in a 25% efficient perovskite–silicon ...
Subfields: Electrical and Electronic Engineering, Polymers and Plastics
View Paper: https://www.semanticscholar.org/paper/299f86cb82b4ed4d21e0ac2ae000f71e21978b41
Citations in the corpus
- Prospects for metal halide perovskite-based tandem solar cells (2021, unknown): “Anti-reflection foils with textured surface applied on top of tandems were also reported 124–126 .”
- Grain Engineering for Perovskite/Silicon Monolithic Tandem Solar Cells with Efficiency of 25.4% (2019, unknown): “Steps have also been taken to improve fill factor (FF): for example, the power loss caused by the large sheet resistance of the front transparent conductive oxide (TCO) electrode was reduced by introducing a metallic grid.(10,18) However, the large Voc deficit remains a major hindrance for tandem de”
- Blade-Coated Perovskites on Textured Silicon for 26%-Efficient Monolithic Perovskite/Silicon Tandem Solar Cells (2020, unknown): “This improvement agrees well with the experimental results reported by Bush et al. and Jost et al.9,10 Second, the Fully textured configuration in Figure 1C further reduces the reflection loss to 1.6 mA/cm2, which agrees with the value reported by Sahli et al.25 Third, the PDMS/Planarized tandem pro”