Here, we observed such a hot carrier effect in hexamine doped methylammonium lead triiodide perovskite solar cells when exposed to 100mW/cm 2 of 5000K white LED light. We discovered that these perovskite solar cells exhibited remarkable power conversion efficiency, reaching up to 54.22% with the ...
perovskiteThe efficient harnessing of hot carriers holds transformative potential for next-generation optoelectronic devices. Halide perovskites, with their remarkably long carrier lifetimes exceeding 10 picoseconds, stand at the forefront of this research frontier. Yet, a fundamental paradox persists: why ...
hot carrierperovskite solar cellsrecombinationHarvesting hot carriers (HCs) before thermalizing to the perovskite crystal lattice is very promising for advancing the efficiency of perovskite solar cells (PSCs) towards the Shockley–Queisser limit. Thus, it is very crucial to slow down the HCs cooling...
hot carrierperovskitesolar cellPerovskite Solar Cells In article number 2400078, Yong Hua and co-workers proposed an effective strategy to realize highly efficient and stable perovskite solar cells by the incorporation of a novel organic additive (6BAS) with six anchoring (C═O) groups. 6B...
hot-carrier injectionperovskite solar cellselectron-transport layerlight managementdecompositionIn the past few years, the power conversion efficiencies (PCEs) of perovskite solar cells (PSCs) have increased from 3.81 to 25.2%, surpassing those of all almost all thin films solar cells. For high-...
Moreover, the comparative study between the 2D and 3D perovskites uncovers the crucial role of hot-carrier effect to tune the NLA response. The ultrafast carrier cooling of quasi-2D perovskite is pointed out as an important factor to realize such abnormal NLA conversion process. These results ...
Hot carrier collectionSteady state illuminationPerovskiteHot carriers and their extraction have been demonstrated in organic-inorganic perovskites under transient condition. Unfortunately, there was no real device to harvest hot carriers under steady-state illumination yet due to the indistinguishable hot and...
Organometallic mixed halide perovskite-based solar cells have shown a breakthrough in power conversion efficiency with power conversion efficiencies recently exceeding 20%. To rationalize the origin of the high efficiencies, we investigate the recombination mechanism and fundamental nature of photoexcitations...
By using ultrafast transient spectroscopy and calculating electronic band structures, we investigated the dependence of halide in Cs-based perovskite (CsPbX3 with X=Br, I, or their mixtures) NCs on the hot-carrier relaxation processes. All samples exhibit ultrafast (3 (310 fs)>CsPbBr1.5I1.5...
With a solar concentrator, an increase in open-circuit voltage (VOC) above the theoretical cold carrier line is observed, and a record efficiency of 27.30% is achieved under 5.9 sun illumination for a single-junction perovskite solar cell. Our strategy demonstrated the potential application of ...