Special Issue "Perovskite Materials and Devices–– Progress and Challenges"

A special issue of Nanomaterials (ISSN 2079-4991).

Deadline for manuscript submissions: 24 September 2019

Special Issue Editors

Guest Editor
Prof. Haibo Zeng

Nanjing University of Science and Technology, MIIT Key Laboratory of Advanced Display Materials and Devices, Institute of Optoelectronics & Nanomaterials, Nanjing University of Science and Technology, Nanjing 210094, China
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Interests: perovskite optoelectronic devices
Guest Editor
Prof. Shin-Tson Wu

College of Optics & Photonics, University of Central Florida, Orlando, FL 32816-2700, USA
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Interests: advanced displays, LCDs, quantum dots, perovskites, OLEDs, augmented reality and virtual reality, adaptive lenses for optical imaging, light field displays, spatial light modulators for wavefront correction, laser beam control
Guest Editor
Prof. Yajie Dong

Department of Materials Science and Engineering, University of Central Florida, Orlando, FL 32816-2700, USA
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Interests: optoelectronics & integrated photonics, LEDs & laser diodes, quantum dots & nanostructures, nanophotonics, nanofabrication, hybrid materials & devices, optical sensing, lasers in medicine, integrated-optic sensing, displays
Guest Editor
Prof. Jizhong Song

Nanjing University of Science and Technology, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Website | E-Mail
Interests: perovskite LED and photodetector

Special Issue Information

Dear Colleagues,

Halide perovskite materials (HPMs) have been proven to be superior semiconductor materials owing to their extraordinary optical and optoelectronic properties, including high light absorptivity, long diffusion length, and large carrier mobility. Benefiting from these fascinating features, HPMs demonstrate vast potential in various optoelectronic fields, such as in solar cells, light-emitting diodes, photodetectors, and memories. Recently, explosive progress in HPM research has made them competitive with traditional semiconductor materials. For instance, the power conversation efficiency (PCE) of perovskites reaches 23.3% within several years, which is comparative to commercial Si-based solar cells. This outstanding optoelectronic performance is truly attractive; however, stability issues have become a crucial and hot topic for commercial applications. Fortunately, a series of strategies have emerged to improve the stability and efficiency of the devices, such as controlling the dimension of the materials, adjusting the treating processes, and optimizing the device structures.

Inspired by the achievements and enormous potential of HPMs for future optoelectronic applications, increasing research activities are devoted to several important methods, such as the design and synthesis of perovskite materials, and the construction of devices. In this Special Issue, we aim to highlight the state-of-the-art in the field and provide an overview of recent progress, including component and low-dimensional perovskites, device structures, and novel optoelectronic devices, all of which hold great promise in material science, engineering, optoelectronic, and nanotechnology.

Prof. Haibo Zeng
Prof. Shin-Tson Wu
Prof. Yajie Dong
Prof. Jizhong Song
Guest Editors

Keywords

  • novel perovskites
  • low-dimensional perovskites
  • solar cells
  • light-emitting diodes
  • photodetectors
  • stability

Published Papers (6 papers)

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Research

Open AccessArticle Rheological Tunability of Perovskite Precursor Solutions: From Spin Coating to Inkjet Printing Process
Nanomaterials 2019, 9(4), 582; https://doi.org/10.3390/nano9040582
Received: 14 March 2019 / Revised: 1 April 2019 / Accepted: 4 April 2019 / Published: 9 April 2019
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Abstract
The high efficiencies (>22%) reached by perovskite-based optoelectronic devices in a very short period, demonstrates the great potential and tunability of this material. The current challenge lies in translating such efficiencies to commercially feasible forms produced through industrial fabrication methods. Herein, a novel [...] Read more.
The high efficiencies (>22%) reached by perovskite-based optoelectronic devices in a very short period, demonstrates the great potential and tunability of this material. The current challenge lies in translating such efficiencies to commercially feasible forms produced through industrial fabrication methods. Herein, a novel first step towards the processability of starch-perovskite inks, developed in our previous work, is investigated, by using inkjet printing technology. The tunability of the viscosity of the starch-perovskite-based inks allows the selection of suitable concentrations to be used as printable inks. After exploration of several printing parameters, thick and opaque starch-perovskite nanocomposite films were obtained, showing interesting morphological and optical properties. The results obtained in this work underline the potential and versatility of our approach, opening the possibility to explore and optimize, in the future, further large-scale deposition methods towards fully printed and stable perovskite devices. Full article
(This article belongs to the Special Issue Perovskite Materials and Devices–– Progress and Challenges)
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Open AccessArticle Understanding the Impact of Cu-In-Ga-S Nanoparticles Compactness on Holes Transfer of Perovskite Solar Cells
Nanomaterials 2019, 9(2), 286; https://doi.org/10.3390/nano9020286
Received: 15 January 2019 / Revised: 7 February 2019 / Accepted: 13 February 2019 / Published: 18 February 2019
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Abstract
Although a compact holes-transport-layer (HTL) film has always been deemed mandatory for perovskite solar cells (PSCs), the impact their compactness on the device performance has rarely been studied in detail. In this work, based on a device structure of FTO/CIGS/perovskite/PCBM/ZrAcac/Ag, that effect was [...] Read more.
Although a compact holes-transport-layer (HTL) film has always been deemed mandatory for perovskite solar cells (PSCs), the impact their compactness on the device performance has rarely been studied in detail. In this work, based on a device structure of FTO/CIGS/perovskite/PCBM/ZrAcac/Ag, that effect was systematically investigated with respect to device performance along with photo-physics characterization tools. Depending on spin-coating speed, the grain size and coverage ratio of those CIGS films on FTO substrates can be tuned, and this can result in different hole transfer efficiencies at the anode interface. At a speed of 4000 r.p.m., the band level offset between the perovskite and CIGS modified FTO was reduced to a minimum of 0.02 eV, leading to the best device performance, with conversion efficiency of 15.16% and open-circuit voltage of 1.04 V, along with the suppression of hysteresis. We believe that the balance of grain size and coverage ratio of CIGS interlayers can be tuned to an optimal point in the competition between carrier transport and recombination at the interface based on the proposed mechanism. This paper definitely deepens our understanding of the hole transfer mechanism at the interface of PSC devices, and facilitates future design of high-performance devices. Full article
(This article belongs to the Special Issue Perovskite Materials and Devices–– Progress and Challenges)
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Open AccessArticle Improved Efficiency of Perovskite Solar Cells by the Interfacial Modification of the Active Layer
Nanomaterials 2019, 9(2), 204; https://doi.org/10.3390/nano9020204
Received: 26 December 2018 / Revised: 15 January 2019 / Accepted: 1 February 2019 / Published: 5 February 2019
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Abstract
As the most promising material for thin-film solar cells nowadays, perovskite shine for its unique optical and electronic properties. Perovskite-based solar cells have already been demonstrated with high efficiencies. However, it is still very challenging to optimize the morphology of perovskite film. In [...] Read more.
As the most promising material for thin-film solar cells nowadays, perovskite shine for its unique optical and electronic properties. Perovskite-based solar cells have already been demonstrated with high efficiencies. However, it is still very challenging to optimize the morphology of perovskite film. In this paper we proposed a smooth and continuous perovskite active layer by treating the poly (3, 4-ethylenedioxythiophene): poly (styrenesulphonate) (PEDOT:PSS) with pre-perovskite deposition and dimethylsulfoxide (DMSO) rinse. The scanning electron microscope (SEM) and atomic force microscope (AFM) images confirmed a perovskite active layer consisting of large crystal grains with less grain boundary area and enhanced crystallinity. The perovskite devices fabricated by this method feature a high power conversion efficiency (PCE) of 11.36% and a short-circuit current (Jsc) of 21.9 mA·cm−2. Full article
(This article belongs to the Special Issue Perovskite Materials and Devices–– Progress and Challenges)
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Open AccessArticle Perovskite Downconverters for Efficient, Excellent Color-Rendering, and Circadian Solid-State Lighting
Nanomaterials 2019, 9(2), 176; https://doi.org/10.3390/nano9020176
Received: 25 December 2018 / Revised: 21 January 2019 / Accepted: 28 January 2019 / Published: 1 February 2019
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Abstract
Advances in materials, color rendering metrics and studies on biological effects promote the design for novel solid-state lighting sources that are highly energy efficient, excellent at color rendering and healthy for human circadian rhythms. Recently, perovskite nanocrystals have emerged as narrow-band, low-cost, color-tunable [...] Read more.
Advances in materials, color rendering metrics and studies on biological effects promote the design for novel solid-state lighting sources that are highly energy efficient, excellent at color rendering and healthy for human circadian rhythms. Recently, perovskite nanocrystals have emerged as narrow-band, low-cost, color-tunable downconverters, elevating the design and development of solid-state lighting to a new level. Here, we perform a systematic optimization of using perovskite nanocrystals as downconverters to simultaneously optimize vision energy efficiency, color rendering quality and circadian action effect of lighting sources at both fixed and tunable color temperatures. Further analysis reveals the inherent differences in central wavelength and bandwidth preferences for different cases, providing a general guideline for designing circadian lighting. Through systematic optimization, highly efficient circadian lighting sources with excellent color rendering can be achieved. Full article
(This article belongs to the Special Issue Perovskite Materials and Devices–– Progress and Challenges)
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Open AccessArticle Enhanced Efficiency of MAPbI3 Perovskite Solar Cells with FAPbX3 Perovskite Quantum Dots
Nanomaterials 2019, 9(1), 121; https://doi.org/10.3390/nano9010121
Received: 17 November 2018 / Revised: 20 December 2018 / Accepted: 14 January 2019 / Published: 19 January 2019
Cited by 1 | PDF Full-text (5854 KB) | HTML Full-text | XML Full-text
Abstract
We describe a method to enhance power conversion efficiency (PCE) of MAPbI3 perovskite solar cell by inserting a FAPbX3 perovskite quantum dots (QD-FAPbX3) layer. The MAPbI3 and QD-FAPbX3 layers were prepared using a simple, rapid spin-coating method [...] Read more.
We describe a method to enhance power conversion efficiency (PCE) of MAPbI3 perovskite solar cell by inserting a FAPbX3 perovskite quantum dots (QD-FAPbX3) layer. The MAPbI3 and QD-FAPbX3 layers were prepared using a simple, rapid spin-coating method in a nitrogen-filled glove box. The solar cell structure consists of ITO/PEDOT:PSS/MAPbI3/QD-FAPbX3/C60/Ag, where PEDOT:PSS, MAPbI3, QD-FAPbX3, and C60 were used as the hole transport layer, light-absorbing layer, absorption enhance layer, and electron transport layer, respectively. The MAPbI3/QD-FAPbX3 solar cells exhibit a PCE of 7.59%, an open circuit voltage (Voc) of 0.9 V, a short-circuit current density (Jsc) of 17.4 mA/cm2, and a fill factor (FF) of 48.6%, respectively. Full article
(This article belongs to the Special Issue Perovskite Materials and Devices–– Progress and Challenges)
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Open AccessArticle Light Trapping Effect in Perovskite Solar Cells by the Addition of Ag Nanoparticles, Using Textured Substrates
Nanomaterials 2018, 8(10), 815; https://doi.org/10.3390/nano8100815
Received: 10 September 2018 / Revised: 5 October 2018 / Accepted: 7 October 2018 / Published: 10 October 2018
Cited by 2 | PDF Full-text (3856 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
In this contribution, the efficiencies of perovskite solar cells have been further enhanced, based on optical optimization studies. The photovoltaic devices with textured perovskite film can be obtained and a power conversion efficiency (PCE) of the textured fluorine-doped tin oxide (FTO)/Ag nanoparticles (NPs) [...] Read more.
In this contribution, the efficiencies of perovskite solar cells have been further enhanced, based on optical optimization studies. The photovoltaic devices with textured perovskite film can be obtained and a power conversion efficiency (PCE) of the textured fluorine-doped tin oxide (FTO)/Ag nanoparticles (NPs) embedded in c-TiO2/m-TiO2/CH3NH3PbI3/Spiro-OMeTAD/Au showed 33.7% enhancement, and a maximum of up to 14.01% was achieved. The efficiency enhancement can be attributed to the light trapping effect caused by the textured FTO and the incorporated Ag NPs, which can enhance scattering to extend the optical pathway in the photoactive layer of the solar cell. Interestingly, aside from enhanced light absorption, the charge transport characteristics of the devices can be improved by optimizing Ag NPs loading levels, which is due to the localized surface plasmon resonance (LSPR) from the incorporated Ag NPs. This light trapping strategy helps to provide an appropriated management for optical optimization of perovskite solar cells. Full article
(This article belongs to the Special Issue Perovskite Materials and Devices–– Progress and Challenges)
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