Tin perovskites have emerged as a promising alternative material to address the toxicity of lead perovskites and the low bandgap of around 1.1 eV is also compatible with tandem solar cell applications. Nevertheless, the optoelectronic performance of solution-processed tin perovskite single-crystal counterparts still lags behind because of the tin instability under ambient conditions during crystal growth and limited reductants to protect the Sn ions from oxidation. Here, the reductant engineering to grow high-quality tin perovskite single crystals under ambient conditions is studied. Oxalic acid (H C O ) serves as an excellent reductant and sacrificial agent to protect Sn ions in methanol due to its suitable redox potential of -0.49 V, and the CO as the oxidation product in the gas state can be easily separated from the solution. The FPEA SnI single crystal grown by this strategy exhibits low trap density perovskite surface by constructing an FPEA PbI -FPEA SnI (FPI-FSI) single crystal heterojunction for X-ray detection. An improved X-ray sensitivity of 1.7 × 10 µC Gy cm is realized in the heterojunction device, outperforming the control FPEA PbI counterpart.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/adma.202307042 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Modification at ITO/NiO Interface with MoS Enables Hole Transport for Efficient and Stable Inverted Perovskite Solar Cells.
ChemSusChem
January 2025
Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P.R. China.
Inverted perovskite solar cells (IPSCs) utilizing nickel oxide (NiO) as hole transport material have made great progress, driven by improvements in materials and interface engineering. However, challenges remain due to the low intrinsic conductivity of NiO and inefficient hole transport. In this study, we introduced MoS nanoparticles at the indium tin oxide (ITO) /NiO interface to enhance the ITO surface and optimize the deposition of NiO, resulting in increased conductivity linked to a ratio of Ni:Ni.
View Article and Find Full Text PDFBandgap Engineering Based on A-site Ions Tuning in Tin Halide Perovskite.
Small
January 2025
College of Semiconductors (College of Integrated Circuits), Hunan University Changsha, Hunan, 410082, P. R. China.
Tin-based halide perovskites (ASnX) have garnered substantial interest due to their unique photoelectric properties and environmentally friendly features. The A-site ions tuning strategy has been proven to promote material performance. However, there is a lack of systematic research on the optical properties, lattice structure variation, and band structure evolution in tin-based perovskites when the A-site ions tune from organic to inorganic.
View Article and Find Full Text PDFOriented Molecular Dipole-Enabled Modulation of NiO/Perovskite Interface for Pb-Sn Mixed Inorganic Perovskite Solar Cells.
Adv Mater
January 2025
Department of Materials Science and Engineering, Key University Laboratory of Highly Efficient Utilization of Solar Energy and Sustainable Development of Guangdong, Southern University of Science and Technology, Shenzhen, 518055, China.
Nickel oxide (NiO) is considered as a potential hole transport material in the fabrication of lead-tin (Pb-Sn) perovskite solar cells (PSCs) for tandem applications. However, the energy level mismatch and unfavorable redox reactions between Ni species and Sn at the NiO/perovskite interface pose challenges. Herein, high-performance Pb-Sn-based inorganic PSCs are demonstrated by modulating the NiO/perovskite interface with a multifunctional 4-aminobenzenesulfonic acid (4-ABSA) interlayer.
View Article and Find Full Text PDFThe Effect of Antisolvent Treatment on the Growth of 2D/3D Tin Perovskite Films for Solar Cells.
ACS Energy Lett
January 2025
Department of Chemistry and Centre for Processable Electronics, Molecular Sciences Research Hub, Imperial College London, London W12 0BZ, U.K.
Antisolvent treatment is used in the fabrication of perovskite films to control grain growth during spin coating. We study widely incorporated aromatic hydrocarbons and aprotic ethers, discussing the origin of their performance differences in 2D/3D Sn perovskite (PEAFASnI) solar cells. Among the antisolvents that we screen, diisopropyl ether yields the highest power conversion efficiency in solar cells.
View Article and Find Full Text PDFMitigation of Self-p-Doping and Off-Centering Effect in Tin Perovskite via Strontium Doping.
ACS Energy Lett
January 2025
Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner Platz 1, 14109 Berlin, Germany.
Tin-based perovskite solar cells offer a less toxic alternative to their lead-based counterparts. Despite their promising optoelectronic properties, their performances still lag behind, with the highest power conversion efficiencies reaching around 15%. This efficiency limitation arises primarily from electronic defects leading to self-p-doping and stereochemical activity of the Sn(II) ion, which distorts the atomic arrangement in the material.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!