Defect/interface recombination limited quasi-Fermi level splitting and open-circuit voltage in mono- and triple cation perovskite solar cells

ACS Applied Materials & Interfaces
Shanshan ZhangMartin Stolterfoht

Abstract

Multi cation metal-halide perovskites exhibit desirable performance and stability compared to their mono cation counterparts. However, the study of the photophysical properties and the nature of defect states in these materials is still a challenging and ongoing task. Here, we study bulk and interfacial energy loss mechanism in solution-processed MAPbI3 (MAPI) and (CsPbI3)0.05[(FAPbI3)0.83(MAPbBr3)0.17]0.95 (triple cation) perovskites solar cells using absolute photoluminescence (PL) measurements. In neat MAPI films, we find a significantly smaller quasi-Fermi level splitting than in triple cation perovskite absorbers which defines the device open-circuit voltage. PL measurements at low temperatures (~50 K) on MAPI films demonstrate that emissive subgap states can be effectively reduced using different passivating agents, which lowers the non-radiative recombination loss at room temperature. We conclude that whilst triple cation perovskite cells are limited by interfacial recombination, the passivation of surface trap states in MAPI films is the primary consideration for device optimization.

References

Apr 24, 2014·Advanced Materials·Christian WehrenfennigLaura M Herz
Aug 5, 2014·Nature Nanotechnology·Zhi-Kuang TanRichard H Friend
Sep 23, 2014·Journal of the American Chemical Society·Michael L AgiorgousisShengbai Zhang
Nov 21, 2014·Nature Communications·Letian DouYang Yang
Nov 26, 2014·Advanced Materials·Young-Hoon KimTae-Woo Lee
Jan 21, 2015·Journal of the American Chemical Society·Xiaoxi WuX-Y Zhu
Apr 17, 2014·The Journal of Physical Chemistry Letters·Jongseob KimKi-Ha Hong
Nov 10, 2015·Nature Communications·Makhsud I SaidaminovOsman M Bakr
Dec 15, 2015·Accounts of Chemical Research·Michael B Johnston, Laura M Herz
May 27, 2016·Nature Communications·Adam D WrightLaura M Herz
Jul 21, 2016·The Journal of Physical Chemistry Letters·Shivam SinghDinesh Kabra
Mar 21, 2017·Scientific Reports·Valerio SarritzuGiovanni Bongiovanni
Sep 5, 2017·Nature Materials·Aron Walsh, Alex Zunger
Jun 2, 2018·ACS Applied Materials & Interfaces·Shanshan ZhangDieter Neher
Sep 20, 2018·Advanced Materials·Jiangzhao Chen, Nam-Gyu Park
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.