To solve the energy level matching problem of the hybrid perovskite CH3NH3SnI3 with a band gap of 1.3 eV, we investigate the key role of an externally applied electric field. First-principle calculations were performed to determine the physical properties of this material under an external ...
2) became more prominent and had a highly oriented lateral direction on the top 3D-perovskite layers when posttreatment with OLAI was conducted at room temperature (2D-RT), which moved the VBM of 2D-RT films closer to the CBM of C60, thus improving the energy level matching between perovsk...
Organic Monomolecular Layers Enable Energy-Level Matching for Efficient Hole Transporting Layer Free Inverted Perovskite Solar Cells W Kong,W Li,C Liu,... - 《Acs Nano》 被引量: 0发表: 2019年 Electromodulation of fluorescence in hole-transporting materials (TPD, TAPC) for organic light-emitting...
As such, a composite of PFI/PEDOT:PSS has been investigated to obtain energy level matching between the HTL and perovskite layer [218]. By simply changing the weight ratio of the two species, a work function of 5.4 eV in the composite is achieved to minimize the Voc loss. The best ...
energy level matching, and device stability [63]. In addition, the lower interface also strongly affects the final morphology of the perovskite films in PSCs [26,118]. The upper interface modification is crucial to the surface defects of perovskite films, such as ionic vacancies and unsaturated...
Inorganic n-type metal oxide materials, i.e., ZnO have been developed and employed as interface layers for energy level matching and electron transport in order to achieve high performance perovskites based optoelectronic devices. In this work, we successfully apply atomic layer deposition (ALD) tec...
(PEDOT:PSS) is probably the most widely used HTL in inverted PSCs due to its relatively high intrinsic mobility and well-matched energy level with perovskite [75]. However, the acidic and hygroscopic properties of PEDOT:PSS can accelerate the perovskite degradation, significantly reducing device ...
Such a top buffer exhibits multifold advantages, including improved film uniformity, enhanced electron extraction and transfer ability, better energy level matching with perovskite, and stronger moisture resistance. Correspondingly, the resultant IP‐PV displays an efficiency exceeding 22% with a 22‐fold...
For their efficient functioning, these layers need to meet important attributes of high transparency in the visible range, energy level matching with the perovskite active layer, good charge transport properties and being easy to deposit. Among the p-type inorganic semiconductors, NiO is interesting ...
The Li doping can significantly shift the valence band of NiOx downward, and the 4% Li content endows NiOx with the optimal energy level matching with perovskite and the best charge separation/transfer ability, which can be confirmed through the photoluminescence results. The corresponding device ...