Potential-induced degradation: a challenge in the commercialization of perovskite solar cells

Raza, Hasan; Imran, Tahir; Gao, You; Azeem, Muhammad; Younis, Muhammad; Wang, Jianan; Liu, Sanwan; Yang, Zhichun; Liu, Zonghao; Chen, Wei

doi:10.1039/d3ee03317a

Cited by 11 publications

(2 citation statements)

References 223 publications

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“…Metal halide perovskites have rapidly gained attention due to their extraordinary optoelectronic properties in solar energy harvesting [1][2][3][4][5] . Up to now, experimental implementations of tandem cells based on metal halide perovskite/silicon combinations have improved quickly [6] .…”

Section: Introductionmentioning

confidence: 99%

Data-driven strategy for bandgap database construction of perovskites and the potential segregation study

Wu,

Zhang,

Wang

et al. 2024

J Mater Inf

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Light-induced segregation limits the practical application of mixed halide perovskites in solar cells. Herein, halide segregation is evaluated by a data-driven approach with constructing a bandgap database of 53,361 mixed ABX3 [where A = Cs, formamidinium (FA) or methylammonium (MA); B = Pb or Sn; X = Br, Cl, or I] perovskites. A transfer learning strategy was employed to fine-tune the parameters of a Graph Neural Network model using experimental and density functional theory (DFT)-calculated bandgaps. This approach accelerated the construction of a unique database, distinguishing it from others primarily focused on ABX3 perovskite element substitution. The database is characterized by continuously varying compositions and accurate bandgaps. It was utilized to calculate the free energy of 20,688 mixed iodine-bromine perovskites and generate corresponding phase diagrams for predicting their light-induced segregation behavior. It is found that the bandgap increases with decreasing ionic radii at the A-site and X-site. This composition-dependent bandgap difference drives halide segregation. Moreover, using a higher Cs content at the A-site, rather than MA, reduces this bandgap difference, enhancing photostability. The proposed data-driven strategy can facilitate the targeted design of novel perovskites with mixed compositions and the investigation of halide perovskite segregation.

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Section: Introductionmentioning

confidence: 99%

Data-driven strategy for bandgap database construction of perovskites and the potential segregation study

Wu,

Zhang,

Wang

et al. 2024

J Mater Inf

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“…Organic–inorganic halide perovskite solar cells (PSCs) have garnered significant attention as a promising alternative to traditional silicon solar cells due to their remarkable progress in power conversion efficiency (PCE) and cost-effectiveness. , However, the inherent sensitivity of perovskite materials to external environmental factors, such as moisture, heat, light, oxygen, and electric bias, poses a critical challenge to their long-term stability. − One key factor for the instability of perovskites is the facile migration of ions within the three-dimensional (3D) perovskite structure. − This ion migration causes the accumulation of charged defects and phase separation near the contact interface, resulting in current-voltage hysteresis and device degradation. Another key factor is the moisture instability of 3D perovskites, which originates mainly from the low formation energy and hydroscopic nature of 3D perovskites. , Therefore, it is essential to employ effective strategies that can passivate defects, inhibit ion migration, and suppress moisture-driven degradation to enhance the stability of PSCs.…”

Section: Introductionmentioning

confidence: 99%

Assembling the 2D–3D–2D Heterostructure of Quasi-2D Perovskites for High-Performance Solar Cells

Hu,

Li,

et al. 2024

ACS Appl. Mater. Interfaces

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Quasi-two-dimensional (quasi-2D) layered perovskites with mixed dimensions offer a promising avenue for stable and efficient solar cells. However, randomly distributed three-dimensional (3D) perovskites near the film surface limit the device performance of quasi-2D perovskites due to increased nonradiative recombination and ion migration. Herein, we construct a 2D (n = 4 top)−3D−2D (n = 2 bottom) heterostructure of quasi-2D perovskites by using 3-chlorobenzylamine iodine, which can effectively reduce defect density and restrain ion migration. A champion efficiency of 22.22% for quasi-2D perovskite solar cells is achieved due to remarkably reduced nonradiative voltage loss and increased electron extraction. Additionally, the 2D−3D−2D perovskite solar cells also exhibit excellent thermal and humidity stabilities, retaining over 90 and 85% of the initial efficiencies after 2000 h under a heat stress of 65 °C and at air ambient of ∼50% humidity, respectively. Our results provide a general approach to tune perovskite films for suppressing ion migration and achieving high-performance perovskite solar cells.

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Non‐Fullerene Organic Electron Transport Materials toward Stable and Efficient Inverted Perovskite Photovoltaics

Wang,

Zhang,

Yao

et al. 2024

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Inverted perovskite solar cells (PSCs) attract continuing interest due to their low processing temperature, suppressed hysteresis, and compatibility with tandem cells. Considerable progress has been made with reported power conversion efficiency (PCE) surpassing 26%. Electron transport Materials (ETMs) play a critical role in achieving high‐performance PSCs because they not only govern electron extraction and transport from the perovskite layer to the cathode, but also protect the perovskite from contact with ambient environment. On the other hand, the non‐radiative recombination losses at the perovskite/ETM interface also limits the future development of PSCs. Compared with fullerene derivatives, non‐fullerene n‐type organic semiconductors feature advantages like molecular structure diversity, adjustable energy level, and easy modification. Herein, the non‐fullerene ETM is systematically summarized based on the molecular functionalization strategy. Various types of molecular design approaches for producing non‐fullerene ETM are presented, and the insight on relationship of chemical structure and device performance is discussed. Meantime, the future trend of non‐fullerene ETM is analyzed. It is hoped that this review provides insightful perspective for the innovation of new non‐fullerene ETMs toward more efficient and stable PSCs.

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Potential-induced degradation: a challenge in the commercialization of perovskite solar cells

Abstract: Presently, perovskite solar cells (PSCs) are one of the most prominent and emerging photovoltaic (PV) technologies. However, the stability of PSCs is typically the primary challenge hindering their practical application....

Cited by 11 publications

References 223 publications

Data-driven strategy for bandgap database construction of perovskites and the potential segregation study

Data-driven strategy for bandgap database construction of perovskites and the potential segregation study

Assembling the 2D–3D–2D Heterostructure of Quasi-2D Perovskites for High-Performance Solar Cells

Non‐Fullerene Organic Electron Transport Materials toward Stable and Efficient Inverted Perovskite Photovoltaics

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