A Dendrite-Structured RbX (X=Br, I) Interlayer for CsPbI2 Br Perovskite Solar Cells with Over 15 % Stabilized Efficiency

ChemSusChem
Jingjing HeHua Gui Yang

Abstract

Interface engineering has shown great potential to improve the photovoltaic performance and long-term stability of perovskite solar cells. Herein, RbX (X=Br, I) materials were developed as the interfacial modifiers for CsPbI2 Br solar cells that realized power conversion efficiencies (PCE) over 15 % with a high open-circuit voltage (VOC ) of 1.27 V. The RbX interlayer having a dendrite-shaped structure could optimize the surface wetting behavior of TiO2 films and thus enabled formation of high-quality perovskite films. More importantly, RbX could better align the devices' energy levels and passivate surface defects because of its large bandgap. The PCE of a CsPbI2 Br device with RbX interlayer remained 87 % of its initial efficiency for 800 h in ambient atmosphere.

References

Sep 12, 2017·Advanced Materials·Pankaj YadavMichael Grätzel
Sep 12, 2017·Journal of the American Chemical Society·Dominik J KubickiLyndon Emsley
Mar 9, 2018·Journal of the American Chemical Society·Chong LiuYaohua Mai
Mar 13, 2018·Advanced Materials·Tianqi NiuShengzhong Frank Liu
Jun 20, 2018·The Journal of Physical Chemistry Letters·Linxing ZhangJianjun Tian
Feb 15, 2019·Scientific Reports·Susan P KrumdieckCatherine M Bishop
Jun 13, 2019·Chemical Society Reviews·Bo ChenJinsong Huang

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.