Perovskite solar cells with atomically coherent interlayers on SnO2 electrodes.

  title={Perovskite solar cells with atomically coherent interlayers on SnO2 electrodes.},
  author={Hanul Min and Do Yoon Lee and Junu Kim and Gwisu Kim and Kyoung Su Lee and Jongbeom Kim and Min Jae Paik and Young Ki Kim and Kwang S. Kim and Min Gyu Kim and Tae Joo Shin and Sang Il Seok},
  volume={598 7881},
In perovskite solar cells, the interfaces between the perovskite and charge-transporting layers contain high concentrations of defects (about 100 times that within the perovskite layer), specifically, deep-level defects, which substantially reduce the power conversion efficiency of the devices1-3. Recent efforts to reduce these interfacial defects have focused mainly on surface passivation4-6. However, passivating the perovskite surface that interfaces with the electron-transporting layer is… 
Ion diffusion-induced double layer doping toward stable and efficient perovskite solar cells
The perovskite layer, electron transport layer (ETL) and their interface are closely associated with carrier transport and extraction, which possess a pronounced effect on current density.
A cascade bilayer electron transport layer toward efficient and stable Ruddlesden‐Popper perovskite solar cells
Optimal interfaces play a key role in charge transport/recombination characteristics and minimized potential loss of perovskite solar cells (PSCs). Currently, n‐type oxide semiconductors are the most
All-perovskite tandem solar cells with improved grain surface passivation.
An ammonium-cation-passivated Pb-Sn perovskites with long diffusion lengths are developed, enabling subcells having an absorber thickness of ~1.2 μm, and a certified efficiency of 26.4% in all-perovskite tandem solar cells is reported, exceeding that of the best-performing single-junction perovSKite solar cells.
Impacts of the Electron Transport Layer Surface Reconstruction on the Buried Interface in Perovskite Optoelectronic Devices.
It is demonstrated that the halogen group at the ETL layer could stabilize the geometric structure of the perovskite surface by balancing the interfacial interaction, ionic migration, and lead iodide framework.
Nanoscale Encapsulation of Hybrid Perovskites Using Hybrid Atomic Layer Deposition.
Organic-inorganic hybrid perovskites have shown tremendous potential for optoelectronic applications. Ion migration within the crystal and across heterointerfaces, however, imposed severe problems
All-vacuum deposited perovskite solar cells with glycine modified NiOx hole-transport layers
Organic–inorganic hybrid perovskite solar cells (PSCs) have attracted enormous research attention due to their high efficiency and low cost. However, most of the PSCs with high efficiencies still
Tin-lead-metal halide perovskite solar cells with enhanced crystallinity and efficiency by addition of fluorinated long organic cation
Highly performing mixed Sn/Pb-metal halide perovskite solar cells (PSCs) are among the most promising options to reduce Pb content in perovskite devices and enable, owing to their reduced bandgap,
Insight into the Interface Engineering of a SnO2/FAPbI3 Perovskite Using Lead Halide as an Interlayer: A First-Principles Study.
The interface engineering of the SnO2/FAPbI3 perovskite using PbX2 (X = Cl, Br, or I) as an interlayer is extensively studied using first-principles calculations, revealing that the thickness of the PbI2 interlayer needs to be finely controlled, which may limit charge transport if there is a large amount of P bI2 precipitation at the interface.
Reconfiguring perovskite interface via R4NBr addition reaction toward efficient and stable FAPbI3-based solar cells
Defect states in perovskite films restrict the interfacial stability and open-circuit voltage of perovskite solar cells. Here, aiming at superior interfacial passivation, we investigate the
Characterizations of tin oxide thin films prepared by different methods for perovskite solar cell applications
Tin oxide thin is a promising electron transport layer (ETL) for perovskite solar cells due to its excellent electronic properties and high thermal stability of SnO2. In addition, unlike TiO2 and


Spontaneous Interface Ion Exchange: Passivating Surface Defects of Perovskite Solar Cells with Enhanced Photovoltage
Interface engineering is of great concern in photovoltaic devices. For the solution‐processed perovskite solar cells, the modification of the bottom surface of the perovskite layer is a challenge due
Efficient and stable solution-processed planar perovskite solar cells via contact passivation
A contact-passivation strategy using chlorine-capped TiO2 colloidal nanocrystal film that mitigates interfacial recombination and improves interface binding in low-temperature planar solar cells is reported.
Halide Perovskites: Is It All about the Interfaces?
A roadmap for the next steps in interfacial design for HaP semiconductors is proposed, emphasizing the importance of achieving control over the interface energetics and chemistry to allow predictive power for tailored interface optimization.
Surface passivation of perovskite film for efficient solar cells
In recent years, the power conversion efficiency of perovskite solar cells has increased to reach over 20%. Finding an effective means of defect passivation is thought to be a promising route for
Defect and Contact Passivation for Perovskite Solar Cells.
The focus is on the origin of the various voltage-limiting mechanisms in PSCs, and the effect of such methods on the reduction of hysteresis are described.
Enhanced electron extraction using SnO 2 for high-efficiency planar-structure HC(NH 2 ) 2 PbI 3 -based perovskite solar cells
Planar structures for halide perovskite solar cells have recently garnered attention, due to their simple and low-temperature device fabrication processing. Unfortunately, planar structures typically
Low-temperature solution-processed tin oxide as an alternative electron transporting layer for efficient perovskite solar cells.
Low-temperature solution-processed nanocrystalline SnO2 can be an excellent alternative ETL material for efficient perovskite solar cells and its best-performing planar cell has achieved an average efficiency of 16.02%.
Atomic layer deposition of a SnO2 electron-transporting layer for planar perovskite solar cells with a power conversion efficiency of 18.3.
Pl quenching, optical band gap measurement, UPS, and conductive AFM results show that SnO2 can more appropriately be used as an ETL compared to TiO2.