Topic
Perovskite solar cell
About: Perovskite solar cell is a research topic. Over the lifetime, 4701 publications have been published within this topic receiving 216807 citations. The topic is also known as: PSC.
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TL;DR: Passivation molecules with various electron density distribution (EDD) are employed as an ideal model to reveal the role of EDD on defect passivation in perovskite thin films and improve stability and performance features are attributed to the efficient passivation for charged defects inperovskites by adding ABN.
Abstract: Commercialization of perovskite solar cells (PSCs) requires developing high-efficiency devices with good stability. Ionic defects existing in the perovskite layer can serve as nonradiative recombination centers to deteriorate the performance of PSCs and can introduce chemical degradation of the perovskite material introducing instability issues. Here, passivation molecules with various electron density distributions (EDD) are employed as an ideal model to reveal the role of EDD on defect passivation in perovskite thin films. Power conversion efficiency (PCE) exceeding 21% with good stability in humid air was obtained for planar PSCs with the 4-aminobenzonitrile (ABN) additive, higher than the reference PSCs with a PCE of 20.22%. The improved stability and performance features are attributed to the efficient passivation for charged defects in perovskites by adding ABN, which guarantees a smaller Urbach energy, longer carrier lifetime, and less traps in the perovskite films.
59 citations
TL;DR: In this paper, the authors used anthanthrone dye as a conjugated core building block and an affordable moiety to synthesize a new organic hole transporting materials (HTM) for perovskite solar cells.
Abstract: Perovskite solar cell (PSCs) technology has made a tremendous impact in the solar cell community due to the exceptional performance of PSCs as the power conversion efficiency (PCE) surged to a world record of 22% within the last few years. Despite this high efficiency value, the commercialization of PSCs for large area applications at affordable prices is still pending due to the low stability of the devices under ambient atmospheric conditions and the very high cost of the hole transporting materials (HTMs) used as the charge transporting layer in these devices. To cope with these challenges, the use of cheap HTMs can play a dual role in terms of lowering the overall cost of perovskite technology as well as protecting the perovskite layer to achieve a higher stability. To achieve these goals, various new organic hole transporting materials (HTMs) have been proposed. In this study, we used a unique and novel anthanthrone (ANT) dye as a conjugated core building block and an affordable moiety to synthesize a new HTM. The commercially available dye was functionalized with an extended diphenylamine (DPA) end capping group. The newly developed HTM, named DPA–ANT–DPA, was synthesized in a single step and used successfully in mesoporous perovskite solar cell devices, achieving a PCE of 11.5% under 1 Sun condition with impressive stability. The obtained device efficiency is amongst the highest as compared to that of other D–A–D molecular design and low band gap devices. This kind of low cost HTM based on an inexpensive starting precursor, anthanthrone dye, paves the way for the economical and large-scale production of stable perovskite solar cells.
59 citations
24 May 2019
TL;DR: The perovskite solar cells attracted great attention owing to their low cost and high performance as mentioned in this paper, and SnO2 as electron transport layer has been mostly used in the perovskiy solar cells due to its exc...
Abstract: The perovskite solar cells attracted great attention owing to their low cost and high performance. SnO2 as electron transport layer has been mostly used in the perovskite solar cells due to its exc...
59 citations
TL;DR: In this article, the lattice strain during an appropriate lattice constriction within BX6 octahedron was released to obtain an unprecedented efficiency of 20.06% under simulated sunlight with facilitating binary metal perovskite of CH3NH3(Zn:Pb)I3-xClx.
59 citations
TL;DR: In this article, a perovskite solar cell (PSC) was developed to realize a low PCE loss rate of 0.007%/h over 1,037h at the maximum power point under 100 mW cm−2 illumination at 5 × 103 Pa.
59 citations