Photodetection and photocatalytic properties of Ag2BiI5 thin films formed by iodization of Ag-BiI3 layers

Ramachandran, Anjali Adappattu; Krishnan, Bindu; Avellaneda, David Avellaneda; Palma, Maria Isabel Mendivil; Aguilar-Martínez, J.A.; Shaji, Sadasivan

doi:10.1016/j.surfin.2022.101985

Cited by 4 publications

(5 citation statements)

References 57 publications

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“…Even though the device architecture and fabrication process were different from ours, the best performance was achieved for a Ag-to-Bi ratio of 55:45. However, in contrast to the earlier w o r k a n d c o n s i s t e n t w i t h s e v e r a l o t h e r r eports 18,23,25,27,30,40,42,44,45,48,58,61 we found an AgI impurity, which, as we showed here, is eliminated by adding a slight excess of BiI 3 .…”

Section: ■ Results and Discussioncontrasting

confidence: 99%

A Semitransparent Silver–Bismuth Iodide Solar Cell with V_oc above 0.8 V for Indoor Photovoltaics

Guerrero

Guo

Shibayama

et al. 2023

ACS Appl. Energy Mater.

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Because the toxicity of lead (Pb) remains a potential threat to the commercialization of perovskite solar cells, silver−bismuth halides such as AgBiI 4 , AgBi 2 I 7 , Ag 2 BiI 5 , and Ag 3 BiI 6 with band gaps of 1.8−1.9 eV and strong absorption are considered to be promising alternatives to Pb-based perovskites, not only for outdoor (1 Sun) but also for indoor photovoltaics because their band gap matches best with the indoor artificial light spectrum. To date, almost all studies have focused on improving the power conversion efficiency (PCE) under 1 Sun using thick absorber films made on mesoporous electron-transport layers. However, in this work, we aimed at developing optically semitransparent Ag 2 BiI 5 solar cells that can be used indoor or on windows. We studied the effect of the precursor composition on the phase evolution, energy band levels, film morphology, and, eventually, solar cell performance. Through compositional engineering and thickness optimization, we accomplished the fabrication of a thin (∼100 nm Ag 2 BiI 5 ) and semitransparent Ag 2 BiI 5 solar cell that works with a power conversion efficiency of ∼2%, which is greater than many reported with thick and opaque films and slightly lower than the best recorded for Ag 2 BiI 5 . The cell shows an open-circuit voltage (V oc ) of over 800 mV, the highest reported for Ag 2 BI 5 . More interestingly, while a thicker/opaque cell was found to work with a PCE of 5.0% under 1000 lx, the semitransparent cell shows a reasonable performance of 3.3% under the same light intensity.

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Section: ■ Results and Discussioncontrasting

confidence: 99%

A Semitransparent Silver–Bismuth Iodide Solar Cell with V_oc above 0.8 V for Indoor Photovoltaics

Guerrero

Guo

Shibayama

et al. 2023

ACS Appl. Energy Mater.

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“…Over the past five years, the subset within the CuI–AgI–BiI 3 phase space of materials that have gained the greatest attention are the ternary Ag–Bi–I compounds. In particular, Ag 3 BiI 6 , 37–39 Ag 2 BiI 5 , 40–43 AgBiI 4 44–46 and AgBi 2 I 7 22,47–49 have been popular. We therefore begin this section by discussing these Ag–Bi–I compounds, before discussing Cu–Bi–I compounds, followed by the quaternary Cu–Ag–Bi–I compounds.…”

Section: Structure–property Relationships Of Compounds In the Cui–agi...mentioning

confidence: 99%

Progress and applications of (Cu–)Ag–Bi–I semiconductors, and their derivatives, as next-generation lead-free materials for photovoltaics, detectors and memristors

Zhu,

Turkevych,

Lohan

et al. 2024

International Materials Reviews

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The search for efficient but inexpensive photovoltaics over the past decade has been disrupted by the advent of lead-halide perovskite solar cells. Despite impressive rises in performance, the toxicity and stability concerns of these materials have prompted a broad, interdisciplinary community across the world to search for lead-free and stable alternatives. A set of such materials that have recently gained attention are semiconductors in the CuI–AgI–BiI3 phase space and their derivatives. These materials include ternary silver bismuth iodide compounds (Ag aBi bI a+3 b), ternary copper bismuth iodide Cu–Bi–I compounds and quaternary Cu–Ag–Bi–I materials, as well as analogues with Sb substituted into the Bi site and Br into the I site. These compounds are comprised of a cubic close-packed sub-lattice of I, with Ag and Bi occupying octahedral holes, while Cu occupies tetrahedral holes. The octahedral motifs adopted by these compounds are either spinel, CdCl2-type, or NaVO2-type. NaVO2-type Ag aBi bI a+3 b compounds are also known as rudorffites. Many of these compounds have thus far demonstrated improved stability and reduced toxicity compared to halide perovskites, along with stable bandgaps in the 1.6–1.9 eV range, making them highly promising for energy harvesting and detection applications. This review begins by discussing the progress in the development of these semiconductors over the past few years, focusing on their optoelectronic properties and process–property–structure relationships. Next, we discuss the progress in developing Ag–Bi–I and Cu–Bi–I compounds for solar cells, indoor photovoltaics, photodetectors, radiation detectors and memristors. We conclude with a discussion of the critical fundamental questions that need to be addressed to push this area forward, and how the learnings from the wider metal-halide semiconductor field can inform future directions.

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“…photocatalytic materials to degrade organic pollutants stably and efficiently, such as Cs 3 Bi 2 Br 9 [182] and Ag 2 BiI 5 . [233] Besides, although CsPbX 3 has relatively poor stability in water, it is fairly stable in ethanol solution and can work as a stable and efficient basal material to accomplish the photocatalytic degradation of organic pollution. [227] Among the various strategies for improving the stability of HPs in the photodegradation process, the composite/encapsulation strategy has been extensively studied in recent years.…”

Section: Photocatalytic Degradationmentioning

confidence: 99%

“…[ 229 ] Deriving from the admirable stability, some bismuth‐based perovskites have been adopted as basal photocatalytic materials to degrade organic pollutants stably and efficiently, such as Cs 3 Bi 2 Br 9 [ 182 ] and Ag 2 BiI 5 . [ 233 ] Besides, although CsPbX 3 has relatively poor stability in water, it is fairly stable in ethanol solution and can work as a stable and efficient basal material to accomplish the photocatalytic degradation of organic pollution. [ 227 ]…”

Section: Stability Of Photocatalytic Applications Over Halide Perovsk...mentioning

confidence: 99%

Improving the Stability of Halide Perovskites for Photo‐, Electro‐, Photoelectro‐Chemical Applications

Du,

Liu,

Liao

et al. 2023

Adv Funct Materials

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Owing to their remarkable and adjustable optoelectronic properties, halide perovskites (HPs) have been regarded as a class of promising materials for various optoelectronic applications based on different energy conversion reactions, including photovoltaic cell, photocatalysis, electrocatalysis, and photoelectrochemical (PEC) systems. However, the low stability of HPs upon exposure to ambient conditions (e.g., water, heat, light, electricity) greatly hinders the practical applications of HPs. In the past few years, significant efforts have been devoted to enhancing the eventual stability of the perovskite‐based optoelectronic systems, mainly focusing on delivering improvements in the stabilities of halide perovskite materials and the relevant operation conditions of optoelectronic systems, which deserve in‐depth and systematic summaries. In this comprehensive review, the in‐depth environment‐induced decomposition mechanisms of typical HPs are elucidated. Simultaneously, the strategies for addressing the instability issues of halide perovskite materials are critically reviewed, including dimension control, compositional engineering, ligand passivation, and encapsulation engineering. Furthermore, the photoelectric applications based on the modified HPs and operation conditions are discussed systematically. In the last part of this review, future perspectives and outlooks toward the stability of HPs and their photoelectric applications are envisaged respectively.

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Photodetection and photocatalytic properties of Ag2BiI5 thin films formed by iodization of Ag-BiI3 layers

Cited by 4 publications

References 57 publications

A Semitransparent Silver–Bismuth Iodide Solar Cell with V_oc above 0.8 V for Indoor Photovoltaics

A Semitransparent Silver–Bismuth Iodide Solar Cell with V_oc above 0.8 V for Indoor Photovoltaics

Progress and applications of (Cu–)Ag–Bi–I semiconductors, and their derivatives, as next-generation lead-free materials for photovoltaics, detectors and memristors

Improving the Stability of Halide Perovskites for Photo‐, Electro‐, Photoelectro‐Chemical Applications

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Photodetection and photocatalytic properties of Ag2BiI5 thin films formed by iodization of Ag-BiI3 layers

Cited by 4 publications

References 57 publications

A Semitransparent Silver–Bismuth Iodide Solar Cell with Voc above 0.8 V for Indoor Photovoltaics

A Semitransparent Silver–Bismuth Iodide Solar Cell with Voc above 0.8 V for Indoor Photovoltaics

Progress and applications of (Cu–)Ag–Bi–I semiconductors, and their derivatives, as next-generation lead-free materials for photovoltaics, detectors and memristors

Improving the Stability of Halide Perovskites for Photo‐, Electro‐, Photoelectro‐Chemical Applications

Contact Info

Product

Resources

About

A Semitransparent Silver–Bismuth Iodide Solar Cell with V_oc above 0.8 V for Indoor Photovoltaics

A Semitransparent Silver–Bismuth Iodide Solar Cell with V_oc above 0.8 V for Indoor Photovoltaics