Journal ArticleDOI
The critical role of composition-dependent intragrain planar defects in the performance of MA1–xFAxPbI3 perovskite solar cells
Wei Li,Mathias Uller Rothmann,Ye Zhu,Weijian Chen,Chenquan Yang,Yongbo Yuan,Yen Yee Choo,Xiaoming Wen,Yi-Bing Cheng,Udo Bach,Joanne Etheridge +10 more
TLDR
Li et al. as mentioned in this paper varied the methylammonium (MA)/formamidinium (FA) composition in perovskite solar cells and compared the structure and density of the intragrain planar defects with device performance.Abstract:
Perovskite solar cells show excellent power conversion efficiencies, long carrier diffusion lengths and low recombination rates. This encourages a view that intragrain defects are electronically benign with little impact on device performance. In this study we varied the methylammonium (MA)/formamidinium (FA) composition in MA1–xFAxPbI3 (x = 0–1), and compared the structure and density of the intragrain planar defects with device performance, otherwise keeping the device nominally the same. We found that charge carrier lifetime, open-circuit voltage deficit and current density–voltage hysteresis correlate empirically with the density and structure of {111}c planar defects (x = 0.5–1) and {112}t twin boundaries (x = 0–0.1). The best performance parameters were found when essentially no intragrain planar defects were evident (x = 0.2). Similarly, reducing the density of {111}c planar defects through MASCN vapour treatment of FAPbI3 (x ≈ 1) also improved performance. These observations suggest that intragrain defect control can provide an important route for improving perovskite solar cell performance, in addition to well-established parameters such as grain boundaries and interfaces. The role of intragrain planar defects in halide perovskite solar cell devices remains elusive. Now, Li et al. tune the composition of the perovskite layer to minimize the planar defect density and observe an improvement in the device performance.read more
Citations
More filters
Journal ArticleDOI
Facet orientation tailoring via 2D-seed- induced growth enables highly efficient and stable perovskite solar cells
TL;DR: In this paper , Chen et al. proposed to use 2D seed induction to enhance the efficiency of mixed-dimensional perovskite solar cells, which can combine the advantage of the high stability of two-dimensional (2D) pervskite and the superior efficiency of 3D perovsite.
Journal ArticleDOI
Toward Stable and Efficient Perovskite Light-Emitting Diodes
Dexin Yang,Dexin Yang,Baodan Zhao,Baodan Zhao,Tao Yang,Runchen Lai,Dongchen Lan,Richard H. Friend,Dawei Di,Dawei Di +9 more
Journal ArticleDOI
Efficient and stable pure α-phase FAPbI3 perovskite solar cells with a dual engineering strategy: Additive and dimensional engineering approaches
Sahira Hassan Kareem,Muntaha Harjan Elewi,Amel Muhson Naji,Duha S. Ahmed,Mustafa K. A. Mohammed +4 more
TL;DR: In this paper , a two-step approach was proposed to improve the performance and stability of 3D FAPbI3 perovskite solar cells through additive engineering based on propionic acid and post-treatment with 2-(4-fluorophenyl)ethyl ammonium iodide (FPEAI) solution doped with nitrosonium tetrafluoroborate (NOBF4).
Journal ArticleDOI
Stable 24.29%‐Efficiency FA0.85MA0.15PbI3 Perovskite Solar Cells Enabled by Methyl Haloacetate‐Lead Dimer Complex
S. Zhan,Yuwei Duan,Zhike Liu,Lüjie Yang,Kun He,Yuhang Che,Wenjing Zhao,Yu Han,Shaomin Yang,Guangtao Zhao,Ningyi Yuan,Jianning Ding,Shengzhong Frank Liu +12 more
TL;DR: In this article , a bifunctional passivator, methyl haloacetate (methyl chloroacetate, (MClA), methyl bromoacetates (MBrA)), is designed to reduce defect density, to tune the energy levels and to improve interfacial charge extraction in the FAMAPbI3 perovskite cell by synergistic passivation of both C�O groups and halogen anions.
Journal ArticleDOI
Advances and challenges in understanding the microscopic structure–property–performance relationship in perovskite solar cells
TL;DR: Zhou et al. as mentioned in this paper analyzed the impact of three microstructure types on perovskites' optoelectronics and on device efficiency and stability, outlining future opportunities for microstructural engineering.
References
More filters
Journal ArticleDOI
The emergence of perovskite solar cells
TL;DR: In this article, a review describes the rapid progress that has been made in hybrid organic-inorganic perovskite solar cells and their applications in the photovoltaic sector.
Journal ArticleDOI
Iodide management in formamidinium-lead-halide–based perovskite layers for efficient solar cells
Woon Seok Yang,Byung-wook Park,Eui Hyuk Jung,Nam Joong Jeon,Young Chan Kim,Dong Uk Lee,Seong Sik Shin,Jangwon Seo,Eun Kyu Kim,Jun Hong Noh,Sang Il Seok +10 more
TL;DR: The introduction of additional iodide ions into the organic cation solution, which is used to form the perovskite layers through an intramolecular exchanging process, decreases the concentration of deep-level defects, enabling the fabrication of PSCs with a certified power conversion efficiency.
Journal ArticleDOI
High Charge Carrier Mobilities and Lifetimes in Organolead Trihalide Perovskites
TL;DR: Organolead trihalide perovskites are shown to exhibit the best of both worlds: charge-carrier mobilities around 10 cm2 V−1 s−1 and low bi-molecular charge-recombination constants.
Journal ArticleDOI
Anomalous hysteresis in perovskite solar cells
Henry J. Snaith,Antonio Abate,James M. Ball,Giles E. Eperon,Tomas Leijtens,Nakita K. Noel,Samuel D. Stranks,Jacob Tse-Wei Wang,Konrad Wojciechowski,Wei Zhang +9 more
TL;DR: This work identifies an anomalous hysteresis in the current-voltage curves of perovskite solar cells, hypothesizes three possible origins of the effect, and discusses its implications on device efficiency and future research directions.
Journal ArticleDOI
Unique Properties of Halide Perovskites as Possible Origins of the Superior Solar Cell Performance
TL;DR: Halide perovskites solar cells have the potential to exhibit higher energy conversion efficiencies with ultrathin films than conventional thin-film solar cells based on CdTe, CuInSe2 , and Cu2 ZnSnSe4.
Related Papers (5)
Efficient perovskite solar cells by metal ion doping
Jacob Tse-Wei Wang,Zhiping Wang,Sandeep Pathak,Wei Zhang,Dane W. deQuilettes,Florencia Wisnivesky-Rocca-Rivarola,Jian Huang,Pabitra K. Nayak,Jay B. Patel,Hanis A. Mohd Yusof,Yana Vaynzof,Rui Zhu,Ivan Ramirez,Jin Zhang,Caterina Ducati,Chris R. M. Grovenor,Michael B. Johnston,David S. Ginger,Robin J. Nicholas,Henry J. Snaith +19 more