Highly efficient perovskite solar cells based on mechanically durable molybdenum cathode

Jeong, Inyoung; Kim, Hae Jin; Lee, Byung Seok; Son, Hae Jung; Kim, Jin Young; Lee, Doh Kwon; Kim, Dae Eun; Lee, Jun Young; Ko, Min Jae

doi:10.1016/j.nanoen.2015.07.025

Cited by 51 publications

(36 citation statements)

References 44 publications

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“…Mo-cathode-based devices show superior mechanical and scratch-resistance properties compared to Au-based devices. [256] Cu is also more stable against reaction with halide perovskite. Unsealed FA/MA mixed-cation PSC with Cu electrode exhibits a stability of longer than 20-30 days in air while Al electrode device degrades within only a few days [257] .…”

Section: Effect Of Contact Electrode On the Stability Of Pscsmentioning

confidence: 99%

Recent progress in stabilizing hybrid perovskites for solar cell applications

Chen

Cai

Yang

et al. 2017

Journal of Power Sources

106

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Hybrid inorganic-organic perovskites have quickly evolved as a promising group of materials for solar cells and optoelectronic applications mainly owing to the inexpensive materials, relatively simple and versatile fabrication and high power conversion efficiency (PCE). The certified energy conversion efficiency for perovskite solar cell (PSC) has reached above 20%, which is compatible to the current best for commercial applications. However, long-term stabilities of the materials and devices remain to be the biggest challenging issue for realistic implementation of the PSCs. This article discusses the key issues related to the stability of perovskite absorbing layer including crystal structural stability, chemical stability under moisture, oxygen, illumination and interface reaction, effects of electron-transporting materials (ETM), hole-transporting materials (HTM), contact electrodes and preparation conditions. Towards the end, prospective strategies for improving the stability of PSCs are also briefly discussed and summarized. We focus on recent understanding of the stability of materials and devices and our perspectives about the strategies for the stability improvement.

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Section: Effect Of Contact Electrode On the Stability Of Pscsmentioning

confidence: 99%

Recent progress in stabilizing hybrid perovskites for solar cell applications

Chen

Cai

Yang

et al. 2017

Journal of Power Sources

106

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“…[81] Slower relaxation of hysteretic processes seems to be behind J-V curve insensitivity on scan direction at higher temperatures/rates. [82] Recently a distinction between capacitive and non-capacitive hysteretic currents has been made. [83] The former being related to the charge, both ionic and electronic, accumulation ability of the TiO2/perovskite interface without any influence on the steady-state operation.…”

Section: Hysteresis In Pscs -Role Of Interfacesmentioning

confidence: 99%

Interfaces in Perovskite Solar Cells

Fakharuddin

Schmidt‐Mende

García-Belmonte

et al. 2017

Advanced Energy Materials

304

261

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understanding of device working mechanism whereas the notes below the line (red text) shows milestones towards scalability and stability. The text in black on the right (future) shows key questions that need to be addressed to completely understand the working of these devices for a commercially deployable device. For each Figure adapted in this timeline, a citation is added within the Figure itself. Crystal structure is reproduced with permission. [277] Copyright 2014, The Royal Society of Chemistry. Schematic of Al 2 O 3 is reproduced with permission. [7]

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“…Organic–inorganic hybrid perovskite materials (OIHPs) benefit from several properties, such as low manufacturing cost, long carrier lifetime, low exciton binding energy, and suitable band gap ( E g ) as a light absorber with high absorption coefficient . Thanks to these advantages, perovskite solar cells (PSCs) based on OIHP have shown tremendous and various advances in the field of solar cells with high power conversion efficiency (PCE) exceeding 22% . As depicted in Figure a, the OIHPs have the chemical formula ABX 3 , where A is a monovalent organic (methylammonium, CH 3 NH 3 + or formamidinium, HC(NH 2 ) 2 + ) or inorganic (Cs + ) cation, B is a divalent metal cation (Pb 2+ or Sn 2+ ) and X is a halide anion (Cl − , Br − , or I − ).…”

Section: Introductionmentioning

confidence: 99%

Inorganic Rubidium Cation as an Enhancer for Photovoltaic Performance and Moisture Stability of HC(NH₂)₂PbI₃ Perovskite Solar Cells

Park

Jeong

Bae

et al. 2017

Adv Funct Materials

Self Cite

223

216

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Perovskite solar cells (PSCs) based on organic monovalent cation (methylammonium or formamidinium) have shown excellent optoelectronic properties with high efficiencies above 22%, threatening the status of silicon solar cells. However, critical issues of long-term stability have to be solved for commercialization. The severe weakness of the state-of-the-art PSCs against moisture originates mainly from the hygroscopic organic cations. Here, rubidium (Rb) is suggested as a promising candidate for an inorganic-organic mixed cation system to enhance moisture-tolerance and photovoltaic performances of formamidinium lead iodide (FAPbI 3 ). Partial incorporation of Rb in FAPbI 3 tunes the tolerance factor and stabilizes the photoactive perovskite structure. Phase conversion from hexagonal yellow FAPbI 3 to trigonal black FAPbI 3 becomes favored when Rb is introduced. The authors find that the absorbance and fluorescence lifetime of 5% Rb-incorporated FAPbI 3 (Rb 0.05 FA 0.95 PbI 3 ) are enhanced than bare FAPbI 3 . Rb 0.05 FA 0.95 PbI 3 -based PSCs exhibit a best power conversion efficiency of 17.16%, which is much higher than that of the FAPbI 3 device (13.56%). Moreover, it is demonstrated that the Rb 0.05 FA 0.95 PbI 3 film shows superior stability against high humidity (85%) and the full device made with the mixed perovskite exhibits remarkable long-term stability under ambient condition without encapsulation, retaining the high performance for 1000 h. Figure 6. Fluorescence lifetime imaging microscopy (FLIM) images of a) FAPbI 3 and b) Rb 0.05 FA 0.95 PbI 3 films deposited on glass. c) Time-resolved photoluminescence (TRPL) spectra of FAPbI 3 and Rb 0.05 FA 0.95 PbI 3 films. Scale bar: 2 µm.

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Highly efficient perovskite solar cells based on mechanically durable molybdenum cathode

Cited by 51 publications

References 44 publications

Recent progress in stabilizing hybrid perovskites for solar cell applications

Recent progress in stabilizing hybrid perovskites for solar cell applications

Interfaces in Perovskite Solar Cells

Inorganic Rubidium Cation as an Enhancer for Photovoltaic Performance and Moisture Stability of HC(NH₂)₂PbI₃ Perovskite Solar Cells

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Highly efficient perovskite solar cells based on mechanically durable molybdenum cathode

Cited by 51 publications

References 44 publications

Recent progress in stabilizing hybrid perovskites for solar cell applications

Recent progress in stabilizing hybrid perovskites for solar cell applications

Interfaces in Perovskite Solar Cells

Inorganic Rubidium Cation as an Enhancer for Photovoltaic Performance and Moisture Stability of HC(NH2)2PbI3 Perovskite Solar Cells

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Inorganic Rubidium Cation as an Enhancer for Photovoltaic Performance and Moisture Stability of HC(NH₂)₂PbI₃ Perovskite Solar Cells