Lead-free perovskite solar cells using Sb and Bi-based A3B2X9 and A3BX6 crystals with normal and inverse cell structures

Baranwal, Ajay Kumar; Masutani, Hideaki; Sugita, Hidetaka; Kanda, Hiroyuki; Kanaya, Shusaku; Shibayama, Naoyuki; Sanehira, Yoshitaka; Ikegami, Machiko; Numata, Youhei; Yamada, Kouji; Miyasaka, Tsutomu; Umeyama, Tomokazu; Imahori, Hiroshi; Ito, Seigo

doi:10.1186/s40580-017-0120-3

Cited by 76 publications

(58 citation statements)

References 33 publications

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“…The normal (n‐i‐p) structured solar cells show better photovoltaic performance as compared to inverted structures. Baranwal et al have proved it by making a comparison between the normal [n‐i‐p‐Tio 2 ‐perovskite‐Spiro‐OMeTAD) and inverted [p‐i‐n‐NiO‐perovskite‐PCBM) structures . ABX 6 compounds can form perovskite like 3D crystals frameworks like bromoantimonate (V) (N‐EtPY) (SbBr 6 ) with short interhalide contacts .…”

Section: Lead‐free Perovskitesmentioning

confidence: 99%

Potential Substitutes for Replacement of Lead in Perovskite Solar Cells: A Review

Kour¹,

et al. 2019

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Lead halide perovskites have displayed the highest solar power conversion efficiencies of 23% but the toxicity issues of these materials need to be addressed. Lead‐free perovskites have emerged as viable candidates for potential use as light harvesters to ensure clean and green photovoltaic technology. The substitution of lead by Sn, Ge, Bi, Sb, Cu and other potential candidates have reported efficiencies of up to 9%, but there is still a dire need to enhance their efficiencies and stability within the air. A comprehensive review is given on potential substitutes for lead‐free perovskites and their characteristic features like energy bandgaps and optical absorption as well as photovoltaic parameters like open‐circuit voltage (VOC), fill factor, short‐circuit current density (J SC), and the device architecture for their efficient use. Lead‐free perovskites do possess a suitable bandgap but have low efficiency. The use of additives has a significant effect on their efficiency and stability. The incorporation of cations like diethylammonium, phenylethyl ammonium, phenylethyl ammonium iodide, etc., or mixed cations at different compositions at the A‐site is reported with engineered bandgaps having significant efficiency and stability. Recent work on the advancement of lead‐free perovskites is also reviewed.

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Section: Lead‐free Perovskitesmentioning

confidence: 99%

Potential Substitutes for Replacement of Lead in Perovskite Solar Cells: A Review

Kour¹,

et al. 2019

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“…Regular structure (n-i-p) shows better photovoltaic performance for antimony halide perovskite as compared with the inverted structure (p-i-n). Reference [ 71 ] investigated and compared regular TiO 2 /(CH 3 NH 3 ) 3 Sb 2 I 9 /spiro-OMeTAD) and inverted NiO/(CH 3 NH 3 ) 3 Sb 2 I 9 /PCMB) structures and found that the regular structure performed better with PCE of 0.08%. Chlorine incorporation is a useful tactic to restrain 0-D pattern and stabilize the 2-D phase structure of (CH 3 NH 3 ) 3 Sb 2 Cl x I 9−x .…”

Section: Inorganic Cation Substitutionmentioning

confidence: 99%

Advancement on Lead-Free Organic-Inorganic Halide Perovskite Solar Cells: A Review

et al. 2018

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Remarkable attention has been committed to the recently discovered cost effective and solution processable lead-free organic-inorganic halide perovskite solar cells. Recent studies have reported that, within five years, the reported efficiency has reached 9.0%, which makes them an extremely promising and fast developing candidate to compete with conventional lead-based perovskite solar cells. The major challenge associated with the conventional perovskite solar cells is the toxic nature of lead (Pb) used in the active layer of perovskite material. If lead continues to be used in fabricating solar cells, negative health impacts will result in the environment due to the toxicity of lead. Alternatively, lead free perovskite solar cells could give a safe way by substituting low-cost, abundant and non toxic material. This review focuses on formability of lead-free organic-inorganic halide perovskite, alternative metal cations candidates to replace lead (Pb), and possible substitutions of organic cations, as well as halide anions in the lead-free organic-inorganic halide perovskite architecture. Furthermore, the review gives highlights on the impact of organic cations, metal cations and inorganic anions on stability and the overall performance of lead free perovskite solar cells.

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“…Therefore, alternative light absorbing materials based on less toxic p ‐block elements such as Sn 2+ , Ge 2+ , Bi 3+ , or Sb 3+ are under intense investigation . Early studies conducted on simply replacing Pb by Bi or Sb in structures like A 3 B 2 I 9 (A=MA, Cs; B=Bi, Sb) were found to result in rather low solar cell efficiencies . The main issue with using trivalent B cations is, that due to charge balance the ABX 3 perovskite structure cannot be maintained.…”

Section: Selection Of Lead‐free Perovskites Reported In Literaturementioning

confidence: 99%

Lead and HTM Free Stable Two‐Dimensional Tin Perovskites with Suitable Band Gap for Solar Cell Applications

2018

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Organic‐inorganic hybrid perovskites have attracted great attention over the last few years as potential light‐harvesting materials for efficient and cost‐effective solar cells. However, the use of lead iodide in state‐of‐the‐art perovskite devices may demonstrate an obstacle for future commercialization due to toxicity of lead. Herein we report on the synthesis and characterization of low dimensional tin‐based perovskites. We found that the use of symmetrical imidazolium‐based cations such as benzimidazolium (Bn) and benzodiimidazolium (Bdi) allow the formation of 2D perovskites with relatively narrow band gaps compared to traditional ‐NH3+ amino groups, with optical band gap values of 1.81 eV and 1.79 eV for Bn2SnI4 and BdiSnI4 respectively. Furthermore, we demonstrate that the optical properties in this class of perovskites can be tuned by formation of a quasi 2D perovskite with the formula Bn2FASn2I7. Additionally, we investigate the change in band gap in the mixed Sn/Pb solid solution Bn2SnxPbx−1I4. Devices fabricated with Bn2SnI4 show promising efficiencies of around 2.3 %.

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Lead-free perovskite solar cells using Sb and Bi-based A3B2X9 and A3BX6 crystals with normal and inverse cell structures

Cited by 76 publications

References 33 publications

Potential Substitutes for Replacement of Lead in Perovskite Solar Cells: A Review

Potential Substitutes for Replacement of Lead in Perovskite Solar Cells: A Review

Advancement on Lead-Free Organic-Inorganic Halide Perovskite Solar Cells: A Review

Lead and HTM Free Stable Two‐Dimensional Tin Perovskites with Suitable Band Gap for Solar Cell Applications

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