Hydrazone dye passivator for high-performance and stable perovskite solar cells

Abstract

Organic-inorganic perovskite solar cells (PSCs) have developed rapidly in recent years, but still facing efficiency and stability challenges due to massive defects in perovskite films. Here, an organic dye (ethyl...

Improving the performance of perovskite solar cells using a dual-hole transport layer

“…2a. 31 As shown in Fig. 2c and d, using AFM, we further studied the morphology of the perovskite film layer prepared in the presence and absence of poly-TPD.…”

Synergistic effect of alkali metal doping and thiocyanate passivation in CsPbBr3 for HTM-free all-inorganic perovskite solar cells

“…2f. Through fitting the TRPL attenuation curve by a double exponential decay function: I = A 1 e −(τ−τ0)/τ1 + A 2 e −(τ−τ0)/τ2 , where τ 1 refers to the fast decay time of defect-dominated singlemolecule nonradiative recombination, τ 2 refers to the slow decay time of the bimolecular radiative recombination part, 28 and the formula:…”

“…2f. Through fitting the TRPL attenuation curve by a double exponential decay function: I = A 1 e −( τ − τ 0 )/ τ 1 + A 2 e −( τ − τ 0 )/ τ 2 , where τ 1 refers to the fast decay time of defect-dominated single-molecule nonradiative recombination, τ 2 refers to the slow decay time of the bimolecular radiative recombination part, 28 and the formula: τ ave = ( A 1 τ 1 2 + A 2 τ 2 2 )/( A 1 τ 1 + A 2 τ 2 ), the average lifetime of the carrier ( τ ave ) is obtained and summarized in Table S1 †. Obviously, the τ ave of the doped CsPbBr 3 films is significantly increased compared to that of the original one, illustrating the decreased carrier recombination in the former films due to their grain size increase and grain boundary defect passivation.…”

Air-processed MAPbI3 perovskite solar cells achieve 20.87% efficiency and excellent bending resistance enabled via a polymer dual-passivation strategy

“…5d presents that the PCE of our MAPbI 3 -based device is evidently outstanding in comparison with the reported works. [44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62] Fig. 5e implies that the light intensity is dependent on V oc , making further sense of the charge carrier recombination changes, and their expression was derived from the equation:…”