High-Efficiency Perovskite Solar Cells

Chemical Reviews, Год журнала: 2020, Номер 120(15), С. 7867 - 7918

Опубликована: Июль 28, 2020

With rapid progress in a power conversion efficiency (PCE) to reach 25%, metal halide perovskite-based solar cells became game-changer photovoltaic performance race. Triggered by the development of solid-state perovskite cell 2012, intense follow-up research works on structure design, materials chemistry, process engineering, and device physics have contributed revolutionary evolution be strong candidate for next-generation energy harvester. The high combination with low cost processes are selling points this over commercial silicon or other organic inorganic cells. characteristic features may enable further advancement PCE beyond those afforded cells, toward Shockley-Queisser limit. This review summarizes fundamentals behind optoelectronic properties materials, as well important approaches fabricating high-efficiency Furthermore, possible strategies enhancing limit discussed.

Язык: Английский

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A fluorene-terminated hole-transporting material for highly efficient and stable perovskite solar cells

Nature Energy, Год журнала: 2018, Номер 3(8), С. 682 - 689

Опубликована: Июль 6, 2018

Язык: Английский

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Charge-Carrier Mobilities in Metal Halide Perovskites: Fundamental Mechanisms and Limits

ACS Energy Letters, Год журнала: 2017, Номер 2(7), С. 1539 - 1548

Опубликована: Май 31, 2017

Perovskite photovoltaic cells have seen a remarkable rise in power conversion efficiencies over period of only few years. Much this performance is underpinned by the favorable charge-carrier mobilities metal halide perovskites (MHPs), which are remarkably high for materials with such facile and versatile processing routes. This Perspective outlines mechanisms that set fundamental upper limit to mobility values MHPs reveals how they may be tuned through changes stoichiometry. In addition, extrinsic effects as grain size, energetic disorder, self-doping discussed specific context remedies designed avoid them.

Язык: Английский

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Mutual Insight on Ferroelectrics and Hybrid Halide Perovskites: A Platform for Future Multifunctional Energy Conversion

Advanced Materials, Год журнала: 2019, Номер 31(43)

Опубликована: Авг. 22, 2019

Abstract An insight into the analogies, state‐of‐the‐art technologies, concepts, and prospects under umbrella of perovskite materials (both inorganic–organic hybrid halide perovskites ferroelectric perovskites) for future multifunctional energy conversion storage devices is provided. Often, these are considered entirely different branches research; however, considering them simultaneously holistically can provide several new opportunities. Recent advancements have highlighted potential high‐efficiency solar cells. The intrinsic polar properties materials, including ferroelectricity, additional possibilities exploiting mechanisms such as piezoelectric, pyroelectric, thermoelectric effect electrical storage. presence phenomena support performance using effects (piezo‐, pyro‐, effect) also be enhanced by a change in light intensity. Thus, there lies range tuning structural, electronic, optical, magnetic to harvest more than one mechanism realize an improved efficiency. This requires basic understanding mechanisms, corresponding material properties, underlying physics involved with effects.

Язык: Английский

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Triple-halide wide–band gap perovskites with suppressed phase segregation for efficient tandems

Science, Год журнала: 2020, Номер 367(6482), С. 1097 - 1104

Опубликована: Март 5, 2020

Tuning band gaps with three halides Tandem solar cells can boost cell efficiency by using two active layers to absorb the spectrum more completely, provided that are current-matched. Inorganic-organic perovskites tuned appropriate wide gap (∼1.7 electron volts) as top contained iodine and bromine or chlorine have short carrier diffusion lengths undergo photo-induced phase segregation. Xu et al. now report a method for incorporating chloride allows fabrication of stable triple-halide 1.67 volts. Two-terminal tandem silicon made this material had power conversion 27%. Science , issue p. 1097

Язык: Английский

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Perovskites for Next-Generation Optical Sources

Chemical Reviews, Год журнала: 2019, Номер 119(12), С. 7444 - 7477

Опубликована: Апрель 25, 2019

Next-generation displays and lighting technologies require efficient optical sources that combine brightness, color purity, stability, substrate flexibility. Metal halide perovskites have potential use in a wide range of applications, for they possess excellent charge transport, bandgap tunability and, the most promising recent source materials, intense luminescence. This review links metal perovskites' performance as light emitters with their underlying materials electronic photophysical attributes.

Язык: Английский

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Stable high efficiency two-dimensional perovskite solar cells via cesium doping

Energy & Environmental Science, Год журнала: 2017, Номер 10(10), С. 2095 - 2102

Опубликована: Янв. 1, 2017

Cs⁺doping into 2D (BA)₂(MA)₃Pb₄I₁₃perovskites boosts power conversion efficiency (PCE) to 13.7% and yields superior humidity thermal stability.

Язык: Английский

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A piperidinium salt stabilizes efficient metal-halide perovskite solar cells

Science, Год журнала: 2020, Номер 369(6499), С. 96 - 102

Опубликована: Июль 2, 2020

Longevity has been a long-standing concern for hybrid perovskite photovoltaics. We demonstrate high-resilience positive-intrinsic-negative solar cells by incorporating piperidinium-based ionic compound into the formamidinium-cesium lead-trihalide absorber. With bandgap tuned to be well suited perovskite-on-silicon tandem cells, this piperidinium additive enhances open-circuit voltage and cell efficiency. This also retards compositional segregation impurity phases pinhole formation in absorber layer during aggressive aging. Under full-spectrum simulated sunlight ambient atmosphere, our unencapsulated encapsulated retain 80 95% of their peak post-burn-in efficiencies 1010 1200 hours at 60° 85°C, respectively. Our analysis reveals detailed degradation routes that contribute failure aged cells.

Язык: Английский

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Light-Induced Anion Phase Segregation in Mixed Halide Perovskites

ACS Energy Letters, Год журнала: 2017, Номер 3(1), С. 204 - 213

Опубликована: Дек. 22, 2017

Hybrid lead halide perovskites such as MAPbI3 (MA = CH3NH3+) and their mixed analogues represent an emerging class of materials for solar energy conversion. Intriguing aspects include sizable carrier diffusion lengths, large optical absorption coefficients, certified power conversion efficiencies that now exceed 22%. Halide-composition-tunable band gaps also make MAPb(I1–xBrx)3 systems ideal candidates tandem cells. Unfortunately, preventing the effective integration into working devices are intrinsic instabilities due to light-induced phase segregation. Namely, under illumination, reversibly segregate low-band-gap I-rich high-band-gap Br-rich domains. Under electrical bias, migration has been proposed source undesirable charge injection barriers degrade photovoltaic performance. In this Perspective, we review origin segregation, its effects on response, ongoing research suppress influence electronic response perovskites.

Язык: Английский

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Progress on Perovskite Materials and Solar Cells with Mixed Cations and Halide Anions

ACS Applied Materials & Interfaces, Год журнала: 2017, Номер 9(36), С. 30197 - 30246

Опубликована: Июль 6, 2017

Organic-inorganic halide perovskite materials (e.g., MAPbI3, FAPbI3, etc.; where MA = CH3NH3+, FA CH(NH2)2+) have been studied intensively for photovoltaic applications. Major concerns the commercialization of technology to take off include lead toxicity, long-term stability, hysteresis, and optimal bandgap. Therefore, there is still need further exploration alternative candidates. Elemental composition engineering MAPbI3 FAPbI3 has proposed address above concerns. Among best six certified power conversion efficiencies reported by National Renewable Energy Laboratory on perovskite-based solar cells, five are based mixed perovskites MAPbI1-xBrx, FA0.85MA0.15PbI2.55Br0.45, Cs0.1FA0.75MA0.15PbI2.49Br0.51). In this paper, we review recent progress synthesis fundamental aspects cation correlating with device performance, hysteresis. outlook, outline future research directions results as well related topics that warrant investigation.

Язык: Английский

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