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Advances in Photovoltaics

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Energy Materials".

Deadline for manuscript submissions: closed (30 September 2021) | Viewed by 2332

Special Issue Editor


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Guest Editor
Kanazawa University, Kanazawa, Japan
Interests: organic materials; semiconducting polymer; fullerene; organic photovoltaics; organic synthesis; material chemistry

Special Issue Information

Dear colleagues,

Energy issues are important challenges that must be solved in the 21st century. Energy generation systems that rely on fossil fuels carry the risk of rapidly changing the global environment, and concerns about the risk are permeating the general public.

Considering these risks, realizing a sustainable society is a challenge for humankind. Obviously, the use of renewable energy is an effective means of breaking away from fossil fuel-dependent societies, but energy generation from renewable sources is still not the main energy source in terms of efficiency, costs, and supply systems.

However, research on energy generation systems from renewable energies, especially sunlight, is more active than ever before. Although the materials used for photovoltaic power generation are mainly silicon, organic semiconductor materials and organic–inorganic hybrid materials (perovskite materials) are gaining recognition. Relatively new organic materials and perovskite materials are expected to develop solar power generation devices for mobile applications, which are difficult with silicon semiconductor materials, and have great significance in realizing unprecedented forms of energy creation.

This Special Issue is focused on materials from photovoltaic energy-harvesting systems, from devices to application of modules, and especially research papers on organic materials and perovskite materials. Perovskite materials have shown tremendous efficiency gains over the past decade and have demonstrated a high capacity. On the other hand, organic materials have a half-century of history, have steadily improved energy conversion efficiency, and are showing momentum close to silicon solar cells. To accelerate this momentum, we publish this Special Issue.

It is my pleasure to invite you to submit a manuscript for this Special Issue. Full papers, communications, and reviews are all welcome.

Prof. Dr. Makoto Karakawa
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • organic photovoltaics
  • organic semiconductor
  • perovskite photovoltaics
  • modules

Published Papers (1 paper)

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Research

18 pages, 3330 KiB  
Article
Elucidating the Trajectory of the Charge Transfer Mechanism and Recombination Process of Hybrid Perovskite Solar Cells
by Joseph K. Kirui, Solomon Akin Olaleru, Lordwell Jhamba, Daniel Wamwangi, Kittessa Roro, Adam Shnier, Rudolph Erasmus and Bonex Mwakikunga
Materials 2021, 14(11), 2698; https://doi.org/10.3390/ma14112698 - 21 May 2021
Cited by 6 | Viewed by 1967
Abstract
Perovskite-based solar cells (PSCs) have attracted attraction in the photovoltaic community since their inception in 2009. To optimize the performance of hybrid perovskite cells, a primary and crucial strategy is to unravel the dominant charge transport mechanisms and interfacial properties of the contact [...] Read more.
Perovskite-based solar cells (PSCs) have attracted attraction in the photovoltaic community since their inception in 2009. To optimize the performance of hybrid perovskite cells, a primary and crucial strategy is to unravel the dominant charge transport mechanisms and interfacial properties of the contact materials. This study focused on the charge transfer process and interfacial recombination within the n–i–p architecture of solar cell devices. The motivation for this paper was to investigate the impacts of recombination mechanisms that exist within the interface in order to quantify their effects on the cell performance and stability. To achieve our objectives, we firstly provided a rationale for the photoluminescence and UV-Vis measurements on perovskite thin film to allow for disentangling of different recombination pathways. Secondly, we used the ideality factor and impedance spectroscopy measurements to investigate the recombination mechanisms in the device. Our findings suggest that charge loss in PSCs is dependent mainly on the configuration of the cells and layer morphology, and hardly on the material preparation of the perovskite itself. This was deduced from individual analyses of the perovskite film and device, which suggest that major recombination most likely occur at the interface. Full article
(This article belongs to the Special Issue Advances in Photovoltaics)
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