Enhancing the Performance of Perovskite Solar Cells by Hybridizing SnS Quantum Dots with CH₃NH₃PbI₃

Fabrication and Characterization of CH3NH3PbI3 Perovskite Solar Cells Added with Polysilanes

“…Since the DPPS has more phenyl groups at the side of Si atoms compared with PMPS and PPS, molecular interactions created by the phenyl groups would affect the nucleation and crystal growth. Introduction of quantum dots such as PbS [57] or SnS [58] could also control the energy band structure. Further studies are needed for the growth of the perovskite phase and the control of the energy bands.…”

PbS quantum dots as additives in methylammonium halide perovskite solar cells: the effect of quantum dot capping

“…The improved morphological, structural and optical properties of the hybrid HP-PbS lms can be attributed to the QDs serving as nucleation sites, which assist the crystalline growth of perovskites along the preferred orientation with bigger grain sizes as has been pointed out in previous studies. [34][35][36] Additionally, we also detected the dependence of HP formation on the capping ligands of embedded PbS QDs at the same concentration. Distinctly bigger perovskite grain size was obtained for ABA capping (see Fig.…”

“…The planar conguration was chosen since the alternative low temperature process SnO 2 layer 21,49 could reduce the fabrication cost and environmental impacts for future application of QDs in low-cost or large-area photovoltaics. [34][35][36]44 Therefore, planar solar cells were fabricated following the structure FTO/SnO 2 /HP or HP-PbS/spiro-OMeTAD/Au. Fig.…”

“…The PCE of PbS QD solar cells has been improved, reaching over 11% for the lead mixed halide capping. 41 In addition, improvement of HP properties by QD incorporation was observed with several types of capping ligands, including organic molecules, 34,36 and HP precursors (MAI 35 and MAPI). 30 The question of how the choice of ligand can also be exploited as a control mechanism for the structural and optoelectronic properties of HP and in turn the efficiency of the QD-containing PSCs is, nevertheless, still open.…”

“…34,35 A similar effect on perovskite properties was also observed for the case of intermixing SnS QDs, capped with triethanolamine, with a MAPI perovskite, although the lattice mismatch between SnS and MAPI is higher. 36 In QD solar cells, the QD capping has a clear impact on the device performance. [37][38][39] Recently, HP precursors such as MAI 40 and lead mixed halides (PbI 2 + PbBr 2 ) 41 and HPs, such as MAPI 42 and CsPI, 43 have been used as the ligands of PbS QDs.…”