Surface Engineering of Ambient-Air-Processed Cesium Lead Triiodide Layers for Efficient Solar Cells

All-inorganic perovskite solar cells with efficiency >20%

“…In a recent work published in Joule by Sang II Seok and co-workers [11], the efficiency of the CsPbI 3 solar cell reached more than 20%. In this work, DMAI was introduced into the precursor solution, and meanwhile, the sequential dripping of a methylammonium chloride (MACl) solution was used to control the intermediate stage of the crystallization process.…”

Efficient (>20 %) and Stable All‐Inorganic Cesium Lead Triiodide Solar Cell Enabled by Thiocyanate Molten Salts

“…[21][22][23][24][25][26] Theo ther one is the surface passivation toward the CsPbI 3 layer by introducing long-chain organic ammonium halides, such as octylammonium iodide,p henyltrimethylammonium chloride and choline iodide. [16,23,27,28] With these efforts,t he PCE of this solar cell has been improved to around 20 %. [27] Nonetheless,c ompared to the hybrid perovskite,t hese efficient CsPbI 3 solar cells still suffer from large photovoltage deficit due to severe non-radiative charge recombination.…”

“…[16,23,27,28] With these efforts,t he PCE of this solar cell has been improved to around 20 %. [27] Nonetheless,c ompared to the hybrid perovskite,t hese efficient CsPbI 3 solar cells still suffer from large photovoltage deficit due to severe non-radiative charge recombination. [29,30] Currently,e ven introducing surface passivation, the charge lifetime of apure 3D CsPbI 3 in these cells is only in arange of 10-20 ns.…”

“…[29,30] Currently,e ven introducing surface passivation, the charge lifetime of apure 3D CsPbI 3 in these cells is only in arange of 10-20 ns. [23,27] This means that defects in the bulk CsPbI 3 film play am ore fundamental role in causing charge recombination loss of the cell. [30][31][32][33][34] Therefore,itisofhigh significance to focus more efforts on exploring effective approaches to eliminating bulk defect of the CsPbI 3 .…”

Oriented inorganic perovskite absorbers processed by colloidal-phase fumigation

“…Inorganic perovskite solar cells (PSCs) have distinct advantages toward robust light harvesting, of which the record power conversion efficiencies (PCEs) have been continuously broken in recent years [1][2][3][4]. The quality of solution-processed CsPbI x Br 3−x films, which can determine the ultimate performance of devices, is strongly dependent on the nucleation and growth stages.…”