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Novel Passivation Techniques for Efficient and Stable Perovskite Solar Cells

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A2: Solar Energy and Photovoltaic Systems".

Deadline for manuscript submissions: closed (20 November 2020) | Viewed by 3786

Special Issue Editor


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Guest Editor
Korea Electronics Technology Institute, Seongnam, Gyeonggi-do 13509, Korea
Interests: renewable energy; perovskite solar cell; inorganic-organic hybrid materials; solution chemistry; colloidal engineering; defect passivation

Special Issue Information

Dear Colleagues,

In recent years, organic–inorganic halide perovskite solar cells have generated tremendous research interests as one of the promising alternatives to the existing photovoltaic technologies because of their unique features, such as excellent diffusion length, strong light absorption, high open circuit voltage, ambipolar charge transport, and solution processability. Especially the last few years have seen extraordinarily rapid progress in their power conversion efficiency (PCE), increasing from 3.8% in 2009 to 25.2% (certified) in 2019 (https://www.nrel.gov/pv/cell-efficiency.html). However, there are still a lot of defect states at the various areas of the perovskite photovoltaic devices because of their inherent properties and their architecture. These defects induce or accelerate perovskite degradation, contributing to nonradiative recombination detrimental to device performance. To overcome the issues, subsequent intensive and collective research has significantly improved materials’ quality and stability and device durability using passivation techniques.

This Special Issue will focus on novel passivation techniques for efficient and stable perovskite solar cells to enlighten the research area and introduce novel approaches.

Topics of interest for publication include but are not limited to:

- Passivation to improve stability;
- Passivation for hysteresis and device performance;
- Passivation of carrier transport layers;
- Passivation of perovskite film;
- Passivation against metal migration;
- Passivation using chemical approaches;
- Other passivation approaches;
- Passivation mechanism.

Dr. Jincheol Kim
Guest Editor

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Keywords

  • perovskite solar cell
  • novel passivation technique
  • passivation mechanism
  • high efficiency
  • high stability

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Published Papers (1 paper)

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Research

12 pages, 2336 KiB  
Article
Cost-efficient, Effect of Low-Quality PbI2 Purification to Enhance Performances of Perovskite Quantum Dots and Perovskite Solar Cells
by ChaeHyun Lee, YeJi Shin, Gyeong G. Jeon, Dongwoo Kang, Jiwon Jung, Byeongmin Jeon, Jongin Park, Jincheol Kim and Seog Joon Yoon
Energies 2021, 14(1), 201; https://doi.org/10.3390/en14010201 - 2 Jan 2021
Cited by 13 | Viewed by 3438
Abstract
In modern society, high-quality material development and a large stable supply are key to perform frontier research and development. However, there are negative issues to address to utilize high-quality resources with a large stable supply for research, such as economic accessibility, commercialization, and [...] Read more.
In modern society, high-quality material development and a large stable supply are key to perform frontier research and development. However, there are negative issues to address to utilize high-quality resources with a large stable supply for research, such as economic accessibility, commercialization, and so on. One of the cutting-edge research fields, perovskite-related research, usually requires high-quality chemicals with outstanding purity (>99%). We developed an economically feasible PbI2 precursor with around 1/20 cost-down for perovskite/perovskite quantum dots through recrystallization and/or hydrothermal purification. Following the methodology, the quantum dots from both as-prepared and purified PbI2 demonstrated identical photophysical properties, with a photoluminescence quantum yield (PLQY) of 52.61% using the purified PbI2 vs. 45.83% PLQY using commercial PbI2. The role of hydrothermal energy was also checked against the problematic PbI2, and we checked whether the hydrothermal energy could contribute to the hindrance of undesired particle formation in the precursor solution, which enables them to form enlarged grain size from 179 ± 80 to 255 ± 130 nm for higher photoconversion efficiency of perovskite solar cells from 14.77 ± 1.82% to 15.18 ± 1.92%. Full article
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