Incorporation of Vanadium(V) Oxide in Hybrid Hole Transport Layer Enables Long-term Operational Stability of Perovskite Solar Cells

Tepliakova, Marina M.; Mikheeva, Aleksandra N.; Frolova, Lyubov A.; Boldyreva, Alexandra; Elakshar, Aly; Novikov, Artyom V.; Tsarev, Sergey; Ustinova, Marina I.; Yamilova, Olga R.; Nasibulin, Albert G.; Алдошин, С. М.; Stevenson, Keith J.; Troshin, Pavel A.

doi:10.1021/acs.jpclett.0c01600

Cited by 34 publications

(29 citation statements)

References 26 publications

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“…According to the literature, such configuration allows achieving high operational stabilities and competitive efficiencies for ZnO-based PSCs [43]. The stability evaluation was performed in the lightsoaking chamber's (Figure 3b) built-in glovebox with an inert atmosphere and control of oxygen and water concentration <0.01 ppm [16]. The unencapsulated devices were exposed to the constant illumination of high-power white light-emitting diodes (70 ± 3 mW/cm 2 ) and a temperature of 45 ± 1 • C for 1250 h, which corresponded to the recommended degradation protocol ISOS-L-2I [44].…”

Section: Resultsmentioning

confidence: 99%

“…In brief, it was demonstrated that the SiO x thin layer and reduced MO x layers appeared between Si and MO x , leading to Fermi level equilibration across the interface [14]. In addition, such advantages of MO x , with high conductivity and the ability to form a smooth pinholefree layer with organic HTLs, enable high efficiencies in PSCs of more than 20% [15,16]. Additionally, the high transparency of MO x permits their application in inverted PSC configurations [17].…”

Section: Introductionmentioning

confidence: 99%

“…There are numerous reports on the application of MoO x [20][21][22][23][24][25][26] and VO x [16,22,[27][28][29][30][31] as HTLs in perovskite solar cells. WO x was previously reported as a component of an efficient double-layer ETL [32] and HTLs [8,33,34].…”

Section: Introductionmentioning

confidence: 99%

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Combination of Metal Oxide and Polytriarylamine: A Design Principle to Improve the Stability of Perovskite Solar Cells

Tepliakova

Mikheeva²,

Somov³

et al. 2021

Energies

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In the last decade, perovskite photovoltaics gained popularity as a potential rival for crystalline silicon solar cells, which provide comparable efficiency for lower fabrication costs. However, insufficient stability is still a bottleneck for technology commercialization. One of the key aspects for improving the stability of perovskite solar cells (PSCs) is encapsulating the photoactive material with the hole-transport layer (HTL) with low gas permeability. Recently, it was shown that the double HTL comprising organic and inorganic parts can perform the protective function. Herein, a systematic investigation and comparison of four double HTLs incorporating polytriarylamine and thermally evaporated transition metal oxides in the highest oxidation state are presented. In particular, it was shown that MoOx, WOx, and VOx-based double HTLs provided stable performance of PSCs for 1250 h, while devices with NbOx lost 30% of their initial efficiency after 1000 h. Additionally, the encapsulating properties of all four double HTLs were studied in trilayer stacks with HTL covering perovskite, and insignificant changes in the absorber composition were registered after 1000 h under illumination. Finally, it was demonstrated using ToF-SIMS that the double HTL prevented the migration of perovskite volatile components within the structure. Our findings pave the way towards improved PSC design that ensures their long-term operational stability.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Combination of Metal Oxide and Polytriarylamine: A Design Principle to Improve the Stability of Perovskite Solar Cells

Tepliakova

Mikheeva²,

Somov³

et al. 2021

Energies

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“…The hole‐collecting electrode consisting of MoO x (10 nm) and Ag (100 nm) was deposited using thermal evaporation, resulting in the final configuration of ITO/SnO 2 /PCBA/CH 3 NH 3 PbI 3 /HTL/MoO x /Ag (Figure 5b). [ 35 ]…”

Section: Resultsmentioning

confidence: 99%

Impact of Synthetic Route on Photovoltaic Properties of Isoindigo‐Containing Conjugated Polymers

Tepliakova

Kuznetsov

Avilova

et al. 2021

Macro Chemistry & Physics

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Herein, the synthesis of a novel isoindigo‐based conjugated polymer using Suzuki and Stille polycondensation reactions is reported. It is shown that the polymer obtained using various reactions possesses different performance in photovoltaic devices. In particular, polymers synthesized using Suzuki and Stille polycondensation demonstrate 2.7% and 4.1% efficiency in organic solar cells, and 12.6% and 15.1% in perovskite solar cells, respectively. The observed difference in the performances of devices is attributed to the appearance of defects in the polymer obtained via Suzuki reaction. Using high‐performance liquid chromatography it is demonstrated that the origin of the polymer quality deterioration is the poor stability of isoindigo‐based monomer under conditions of Suzuki polycondensation. Revealing this aspect allows one to figure out a more effective approach for the synthesis of high‐quality isoindigo‐based polymers for organic electronics.

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“…Further, an imperfect interface at the perovskite/SOOM causes high resistance, low transport, and high interfacial recombination ( Figure 8 a); however, research on well‐established methods for depositing SOOMs on top of perovskite is lacking. [ 108–110 ] Although HPSCs with SOOMs are usually expected to be very stable under humid, light, and thermal stress conditions because of their structural stability, the perovskite/SOOM interface might suffer from a certain degradation mechanism that should be suppressed to ensure the stability of HPSCs. [ 76,109 ] For instance, during the thermal degradation of the perovskite/NiO interface, the large negative enthalpy of the NiO reaction with HI arising from MAI causes the formation of NiI 2 (Figure 8a).…”

Section: Challenges and Promising Strategies For High‐performance Hpscsmentioning

confidence: 99%

Recent Progress in the Semiconducting Oxide Overlayer for Halide Perovskite Solar Cells

Woo

Choi

Lee

et al. 2021

Advanced Energy Materials

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Halide perovskite solar cells (HPSCs) contain charge transport layers (CTLs) both above and below the photoactive perovskite layer. These semiconducting CTLs are just as important as the perovskite layer to fully realizing the potential of perovskite materials. In particular, semiconducting oxide overlayer materials (SOOMs) are expected to lower costs and provide better long‐term stability compared to the organic semiconducting materials commonly used for the upper layer. However, SOOM‐based HPSCs are currently less efficient than conventional devices owing to SOOM's deposition constraints imposed by the underlying perovskite layer. This progress report focuses on the recent evolution of SOOM‐based HPSCs by describing the key issues and recent advances in SOOM deposition methods. Finally, remaining challenges and future research directions for SOOMs are discussed to provide guidance toward the commercialization of HPSCs.

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Incorporation of Vanadium(V) Oxide in Hybrid Hole Transport Layer Enables Long-term Operational Stability of Perovskite Solar Cells

Cited by 34 publications

References 26 publications

Combination of Metal Oxide and Polytriarylamine: A Design Principle to Improve the Stability of Perovskite Solar Cells

Combination of Metal Oxide and Polytriarylamine: A Design Principle to Improve the Stability of Perovskite Solar Cells

Impact of Synthetic Route on Photovoltaic Properties of Isoindigo‐Containing Conjugated Polymers

Recent Progress in the Semiconducting Oxide Overlayer for Halide Perovskite Solar Cells

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