Operational stability, low light performance, and long-lived transients in mixed-halide perovskite solar cells with a monolayer-based hole extraction layer

Murdey, Richard; Ishikura, Yukiko; Matsushige, Yuko; Hu, Shuaifeng; Pascual, Jorge; Truong, Minh Anh; Nakamura, Tomoya; Wakamiya, Atsushi

doi:10.1016/j.solmat.2022.111885

Cited by 3 publications

(2 citation statements)

References 45 publications

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“…24) C, the XRD patterns of most samples show typical diffraction peaks of crystal-structured Cs 0.05 FA 0.85 MA 0.1 PbI 2 Br PVK. 12,[25][26][27] When the Cat-CVD SiN x was deposited on the bare PVK at a T sub of 137 °C, all main PVK and PbI 2 peaks completely disappear leaving behind metallic Pb peaks. 28,29) Moreover, as can be clearly seen in Figs.…”

Section: Characterizationmentioning

confidence: 99%

Cat-CVD SiN_x as a gas barrier for application to perovskite solar cells

Tu¹,

Shimazaki²,

Kaneko³

et al. 2022

Jpn. J. Appl. Phys.

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We investigated a silicon nitride (SiNx) film prepared by catalytic chemical vapor deposition (Cat-CVD) as a gas barrier for further improving stability of mixed-cation-halide perovskite (PVK) Cs0.05FA0.85MA0.1PbI2Br under dark air conditions. The SiNx film can be formed on the PVK capped with carrier transport layers such as 2,2′,7,7′-tetrakis[N,N-di(4-methoxylphenyl)amino]-9,9′-spirobifluorene (Spiro-OMeTAD) and phenyl-C61-butyric-acid-methyl-ester (PCBM)/aluminum-doped-zinc-oxide (AZO) with less degradation in its optical transmittance property and crystal structure. The PVK/Spiro-OMeTAD encapsulated by SiNx exhibits a slower reduction in average carrier lifetime after storage for 330 hours at room temperature with ~65%RH. The PVK/PCBM/AZO covered with SiNx shows a small blue-shift (8–10 nm) in the absorption band-edge of PVK and with less decrease in the transmittance in the long wavelength range for ~500 hours at 85 °C with ~2%RH. These results demonstrate the effect of SiNx in preventing the degradation of PVK due to the interactions with moisture and oxygen in the air.

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Section: Characterizationmentioning

confidence: 99%

Cat-CVD SiN_x as a gas barrier for application to perovskite solar cells

Tu¹,

Shimazaki²,

Kaneko³

et al. 2022

Jpn. J. Appl. Phys.

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“…For an inverted structure, PEDOT:PSS, poly(9,9-bis(3'-(N,N-dimethyl)-Nethylammoinium-propyl-2,7-fluorene)-alt-2,7-(9,9dioctylfluorene)) dibromide coated on polytriarylamine (PTAA/PFN-Br bilayer), and selfassembled monolayers (SAMs) have been commonly utilized as the underlying hole transport materials (HTMs). Recently, for WG inverted PSCs, devices with PTAA(/PFN-Br) [12,21,[24][25][26] and SAMs [27][28][29][30] have demonstrated particularly high PCE. FAMACs-and FACs-based WG LHPs have exhibited relatively high PCE exceeding 18% [11].…”

Section: Introductionmentioning

confidence: 99%

Compositional Dependence of Charge Carrier Dynamics in Multi-Cation/Halide Wide Bandgap Perovskites

Park,

Nishikubo,

Saeki

2023

J. Photopol. Sci. Technol.

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Lead halide perovskites (LHPs) have a diverse compositional range owing to various employable A-and X-site ions. However, the effect of underlying charge transport layer (CTLs) on the charge transport properties in the composition-varied LHPs remains uncertain. Herein, we employed optical spectroscopies and time-resolved microwave conductivity (TRMC) to investigate the dependence of the optical and photoconductive properties of various A-site (formamidinium: FA, methylammonium: MA, Cs) and X-site (Br, I) compositions of LHPs with different underlying CTLs. Intriguingly, it was found that tricationic FAMACs-based LHPs showed more efficient charge separation than bicationic FACs-and FAMA-based ones in a regular structure. Conversely, FACs-based LHPs showed more efficient charge separation than the others in an inverted structure, as evidenced by the prolonged lifetime of TRMC decays. In alignment with these TRMC results, FAMACs exhibited higher device performance in a regular structure than inverted structure. Whereas, FACs showed superior performance in an inverted structure. Hence, our study revealed that the optimal device structure is compositionally dependent on the charge carrier dynamics.

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Materials chemistry for metal halide perovskite photovoltaics

Nakamura,

Kondo,

Ohashi

et al. 2024

Bulletin of the Chemical Society of Japan

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Metal halide perovskite semiconductors are excellent materials for next-generation solar cells. As a result of research and development all over the world, the photoelectric conversion efficiency for single-cell devices has rapidly improved to over 26% (as of July 2023), while the record efficiency for silicon-on-perovskite tandem devices currently stands at 33.7% (reported in May 2023). Materials chemistry has made many important contributions toward these remarkable results. In this account, we will introduce our achievements in these areas of material chemistry research for improving the performance of perovskite photovoltaics, including the development of high-purity precursor materials, and precursor inks tailored for large-area printed perovskite films. Studies of the nucleation and crystallization process, including simulations, have led to the reliable fabrication of high-quality perovskite films. Diverse new charge collection materials, as well as compounds to effectively modify the perovskite surfaces, have improved solar cell performance.

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Operational stability, low light performance, and long-lived transients in mixed-halide perovskite solar cells with a monolayer-based hole extraction layer

Cited by 3 publications

References 45 publications

Cat-CVD SiN_x as a gas barrier for application to perovskite solar cells

Cat-CVD SiN_x as a gas barrier for application to perovskite solar cells

Compositional Dependence of Charge Carrier Dynamics in Multi-Cation/Halide Wide Bandgap Perovskites

Materials chemistry for metal halide perovskite photovoltaics

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Operational stability, low light performance, and long-lived transients in mixed-halide perovskite solar cells with a monolayer-based hole extraction layer

Cited by 3 publications

References 45 publications

Cat-CVD SiN x as a gas barrier for application to perovskite solar cells

Cat-CVD SiN x as a gas barrier for application to perovskite solar cells

Compositional Dependence of Charge Carrier Dynamics in Multi-Cation/Halide Wide Bandgap Perovskites

Materials chemistry for metal halide perovskite photovoltaics

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Product

Resources

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Cat-CVD SiN_x as a gas barrier for application to perovskite solar cells

Cat-CVD SiN_x as a gas barrier for application to perovskite solar cells