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Article
Tuning coherent phonon dynamics in two-dimensional phenylethylammonium lead bromide perovskites
Organic-inorganic layered perovskites are two-dimensional quantum well layers in which the layers of lead halide octahedra are stacked between the organic cation layers. The packing geometry of the soft organi...
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Article
Synthesis-on-substrate of quantum dot solids
Perovskite light-emitting diodes (PeLEDs) with an external quantum efficiency exceeding 20% have been achieved in both green and red wavelengths1–5; however, the performance of blue-emitting PeLEDs lags behind6,7
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Article
Open AccessHigh-performance large-area quasi-2D perovskite light-emitting diodes
Serious performance decline arose for perovskite light-emitting diodes (PeLEDs) once the active area was enlarged. Here we investigate the failure mechanism of the widespread active film fabrication method; an...
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Article
Open AccessHigh-performance quasi-2D perovskite light-emitting diodes: from materials to devices
Quasi-two-dimensional (quasi-2D) perovskites have attracted extraordinary attention due to their superior semiconducting properties and have emerged as one of the most promising materials for next-generation l...
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Article
Open AccessSmoothing the energy transfer pathway in quasi-2D perovskite films using methanesulfonate leads to highly efficient light-emitting devices
Quasi-two-dimensional (quasi-2D) Ruddlesden–Popper (RP) perovskites such as BA2Csn–1PbnBr3n+1 (BA = butylammonium, n > 1) are promising emitters, but their electroluminescence performance is limited by a severe n...
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Article
Open AccessReducing the impact of Auger recombination in quasi-2D perovskite light-emitting diodes
Rapid Auger recombination represents an important challenge faced by quasi-2D perovskites, which induces resulting perovskite light-emitting diodes’ (PeLEDs) efficiency roll-off. In principle, Auger recombinat...
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Article
Open AccessReduced-dimensional perovskite photovoltaics with homogeneous energy landscape
Reduced-dimensional (quasi-2D) perovskite materials are widely applied for perovskite photovoltaics due to their remarkable environmental stability. However, their device performance still lags far behind trad...
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Article
Two-dimensional perovskite cap** layer for stable and efficient tin-lead perovskite solar cells
Mixed tin-lead iodide perovskites exhibit the characteristics of low toxicity and improved light harvesting ability up to nearinfrared (NIR) spectral region, making them as an attractive alternative for tradit...
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Article
Open AccessSpectra stable blue perovskite light-emitting diodes
Device performance and in particular device stability for blue perovskite light-emitting diodes (PeLEDs) remain considerable challenges for the whole community. In this manuscript, we conceive an approach by t...
