A piperidinium salt stabilizes efficient metal-halide perovskite solar cells.
Science (New York, N.Y.) Nature Research 369:6499 (2020) 96-102
Abstract:
Longevity has been a long-standing concern for hybrid perovskite photovoltaics. We demonstrate high-resilience positive-intrinsic-negative perovskite solar cells by incorporating a piperidinium-based ionic compound into the formamidinium-cesium lead-trihalide perovskite absorber. With the bandgap tuned to be well suited for perovskite-on-silicon tandem cells, this piperidinium additive enhances the open-circuit voltage and cell efficiency. This additive also retards compositional segregation into impurity phases and pinhole formation in the perovskite absorber layer during aggressive aging. Under full-spectrum simulated sunlight in ambient atmosphere, our unencapsulated and encapsulated cells retain 80 and 95% of their peak and post-burn-in efficiencies for 1010 and 1200 hours at 60° and 85°C, respectively. Our analysis reveals detailed degradation routes that contribute to the failure of aged cells.Publisher Correction: Deciphering photocarrier dynamics for tuneable high-performance perovskite-organic semiconductor heterojunction phototransistors.
Nature communications 11:1 (2020) 2956
Abstract:
An amendment to this paper has been published and can be accessed via a link at the top of the paper.Light soaking in metal halide perovskites studied via steady-state microwave conductivity
Communications Physics Springer Nature 3:1 (2020) 73
High Responsivity and Response Speed Single‐Layer Mixed‐Cation Lead Mixed‐Halide Perovskite Photodetectors Based on Nanogap Electrodes Manufactured on Large‐Area Rigid and Flexible Substrates
Advanced Functional Materials Wiley 30:6 (2020)
A universal solution processed interfacial bilayer enabling ohmic contact in organic and hybrid optoelectronic devices
Energy & Environmental Science Royal Society of Chemistry (RSC) 13:1 (2020) 268-276