Inorganic wide-bandgap perovskite subcells with dipole bridge for all-perovskite tandems

Capping Ligand Engineering Enables Stable CsPbBr3 Perovskite Quantum Dots toward White-Light-Emitting Diodes

“…Bragg’s formula was utilized to calculate the crystal interplanar distance of the PeQDs and found that interplanar distances for the (100) plane of DDAF-3 PeQDs are 0.58 nm, which are in good agreement with the HRTEM results in insets of Figure b. Moreover, we found that the intensities of the (110) and (211) peaks at 21.4 and 37.5° in Figure c were low, and we speculated that this phenomenon was related to the film formation method of PeQDs: DDAF PeQDs stacked along the (100) and (200) planes during the film formation process, showing a preferential orientation. , …”

“…Moreover, we found that the intensities of the ( 110) and (211) peaks at 21.4 and 37.5°in Figure 3c were low, and we speculated that this phenomenon was related to the film formation method of PeQDs: DDAF PeQDs stacked along the (100) and ( 200) planes during the film formation process, showing a preferential orientation. 60,61 Table 1. Fitted Lifetime, Average Lifetimes, and Radiative and Nonradiative Decay Rates of the DDAF-X PeQDs Shown in Figure 2d sample To gain information about the capping ligands of the PeQDs, FTIR technology was employed.…”

A Novel Anthracene Derivative Used as Cathode Interlayer for Efficient Inverted Perovskite Solar Cell

“…The larger difference between φ max and φ min indicates a greater molecular polarity. [17] We found that the dipole moments for the neutral molecules increase with the introduction of N atoms, indicating that Anth-hpp2 has greater polarity than without the super-base group, so it can contact better with metal electrode. It has been reported that nitrogen atoms can combine with the silver electrode by forming the Ag-N bond, which acts as an interface dipole layer, resulting in the reduction of the work function of the Ag electrode.…”

Surface polarization-induced emission and stability enhancement of CsPbX3nanocrystals

“…38 In addition, introducing dipolar molecules is known to be an effective way to enhance the stability of perovskite. [39][40][41] Li et al employed a dipole layer between organic transport layers and inorganic perovskite, leading to reduced energetic mismatch and increased charge extraction. 41 Therefore, it is clear from previous studies that increasing the surface polarization of CsPbX 3 NCs potentially provides an alternative strategy to strengthen the surface ligand bonding and decrease the defect-capture radius.…”

“…[39][40][41] Li et al employed a dipole layer between organic transport layers and inorganic perovskite, leading to reduced energetic mismatch and increased charge extraction. 41 Therefore, it is clear from previous studies that increasing the surface polarization of CsPbX 3 NCs potentially provides an alternative strategy to strengthen the surface ligand bonding and decrease the defect-capture radius. However, a dipolar-molecule-based dipole layer is most commonly used to achieve the polarization effect in bulk perovskites, 42 and this strategy is not suitable for CsPbX 3 NCs dispersed in non-polar solvent with a small size (∼10 nm).…”