A5030237795- Perovskite Materials and Applications
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- Organic Electronics and Photovoltaics
- ZnO doping and properties
- Advanced Photocatalysis Techniques
- Transition Metal Oxide Nanomaterials
- Catalytic Processes in Materials Science
- Quantum Dots Synthesis And Properties
- Gas Sensing Nanomaterials and Sensors
- Solid-state spectroscopy and crystallography
- Gold and Silver Nanoparticles Synthesis and Applications
Henan University
2012-2025
Abstract Self‐assembled monolayers (SAMs) have displayed great potential for improving efficiency and stability in p–i–n perovskite solar cells (PSCs). The anchoring of SAMs at the conductiv metal oxide substrates their interaction with materials must be rationally tailored to ensure efficient charge carrier extraction improved quality films. Herein, molecules different groups spacers control mixed Sn–Pb PSCs are selected. It is found that monolayer carboxylate group exhibits appropriate has...
Interface-induced nonradiative recombination losses at the perovskite/electron transport layer (ETL) are an impediment to improving efficiency and stability of inverted (p-i-n) perovskite solar cells (PSCs). Tridecafluorohexane-1-sulfonic acid potassium (TFHSP) is employed as a multifunctional dipole molecule modify surface. The solid coordination hydrogen bonding efficiently passivate surface defects, thereby reducing recombination. induced positive between ETLs improves energy band...
Abstract The inherent defects (lead iodide inversion and iodine vacancy) in perovskites cause non‐radiative recombination there is also ion migration, decreasing the efficiency stability of perovskite devices. Eliminating these critical for achieving high‐efficiency solar cells. Herein, an organic molecule with multiple active sites (4,7‐bromo‐5,6‐fluoro‐2,1,3‐phenylpropyl thiadiazole, M4) introduced to modify upper interface perovskites. When M4 interacts surface, bromine (Br) site lead...
Self-assembled monolayer molecules have been widely employed as interfacial transport materials in inverted perovskite solar cells (PSCs), demonstrating high efficiency and improved device stability. However, self-assembling (SAM) often suffer from aggregation weak interactions with the layer, resulting inefficient charge transfer significant energy losses, ultimately limiting power conversion long-term stability of cells. In this work, we developed a series novel skeleton-matching carbazole...
Abstract Tin halide perovskite solar cells are promising for the next generation of highly efficient photovoltaics. Their commercialization can be accelerated by increasing their stability in moisture and oxygen. Herein, an n‐type organic molecule (IO‐4Cl) is applied as interlayer between films electron transport layers p‐i‐n structured devices. The electron‐rich indacenodithieno‐[3,2‐b]thiophene enhances transport, while hydrocarbon side chains rigid conjugated backbone isolate air. It also...
Precursor solution of CH3NH3PbI3-xClx for perovskite solar cells was conventionally prepared by mixing PbCl2 and CH3NH3I with a mole ratio 1:3 (PbCl2:CH3NH3I). While in the present study, CH3NH3PbI3-xClx-based were fabricated using precursor solutions containing ratios 1:3, 1.05:3, 1.1:3, 1.15:3, respectively. The results display that 1.1:3 higher power conversion efficiency less I-V hysteresis than those 1:3. Based on some investigations, it is concluded could be due to smooth pinhole free...
The surface‐enhanced Raman scattering (SERS) of molecules on TiO 2 (Degussa P25) was investigated. variation trap density carried out by the calcination at 350, 450 and 600°C. We found that SERS intensity increases first, then decreases with temperature rising from 350 to 450°C 600°C, respectively. measurements indicate rising. results increase is favorable for enhancement. could be due dominated contribution increase, decrease 600°C crystallite size mass fraction rutile phase. Copyright ©...
In this paper, heterojunction semiconductors of Sb-SnO2/TiO2 were prepared with varying molar ratios Sb-SnO2 to TiO2. The separation efficiency the photogenerated carriers was characterised by surface photovoltage (SPV) technique, and trap density measured an electrochemical method. be 7·48×1016, 6·01×1016, 5·43×1016, 6·61×1016 cm−2 for TiO2 films 1, 2, 3%, respectively. SPV enhancement estimated 1·36, 7·64, 6·36 results indicate that increases decreasing density, which demonstrates is...