Formamidinium-containing metal-halide: An alternative material for near-IR absorption perovskite solar cells

Teck Ming Koh; Kunwu Fu; Yanan Fang; Shi Chen; T. C. Sum; Nripan Mathews; Subodh G. Mhaisalkar; Pablo P. Boix; Tom Baikie

doi:10.1021/jp411112k

Formamidinium-containing metal-halide: An alternative material for near-IR absorption perovskite solar cells

Teck Ming Koh, Kunwu Fu, Yanan Fang, Shi Chen, T. C. Sum, Nripan Mathews, Subodh G. Mhaisalkar, Pablo P. Boix^*, Tom Baikie

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

723 Citations (Scopus)

Abstract

Solid-state, solution processed solar-cells based on organic-inorganic methyl ammonium lead halide absorbers have achieved efficiencies in excess of 15%, which has superseded liquid dye sensitized cells, as well as various thin film-based photovoltaics. This report introduces a new metal-halide perovskite, based on the formamidinium cation (HC(NH₂)₂⁺), that displays a favorable band gap (1.47 eV) and represents a broader absorption compared to previously reported absorbers that contained the methylammonium cation (CH₃NH₃⁺). The high open-circuit voltage (V_oc = 0.97 V) and promising fill-factor (FF = 68.7%) yield an efficiency of 4.3%, which make this material an excellent candidate for this new class of perovskite solar cell. This report also investigates the formation of a black trigonal (P3m1) perovskite polymorph and a yellow hexagonal nonperovskite (P63mc) polymorph. Further solar cell development would entail the stabilization of the black trigonal (P3m1) perovskite polymorph over the yellow hexagonal nonperovskite (P63mc) polymorph.

Original language	English
Pages (from-to)	16458-16462
Number of pages	5
Journal	Journal of Physical Chemistry C
Volume	118
Issue number	30
DOIs	https://doi.org/10.1021/jp411112k
Publication status	Published - Jul 31 2014
Externally published	Yes

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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title = "Formamidinium-containing metal-halide: An alternative material for near-IR absorption perovskite solar cells",

abstract = "Solid-state, solution processed solar-cells based on organic-inorganic methyl ammonium lead halide absorbers have achieved efficiencies in excess of 15%, which has superseded liquid dye sensitized cells, as well as various thin film-based photovoltaics. This report introduces a new metal-halide perovskite, based on the formamidinium cation (HC(NH2)2+), that displays a favorable band gap (1.47 eV) and represents a broader absorption compared to previously reported absorbers that contained the methylammonium cation (CH3NH3+). The high open-circuit voltage (Voc = 0.97 V) and promising fill-factor (FF = 68.7%) yield an efficiency of 4.3%, which make this material an excellent candidate for this new class of perovskite solar cell. This report also investigates the formation of a black trigonal (P3m1) perovskite polymorph and a yellow hexagonal nonperovskite (P63mc) polymorph. Further solar cell development would entail the stabilization of the black trigonal (P3m1) perovskite polymorph over the yellow hexagonal nonperovskite (P63mc) polymorph.",

author = "Koh, {Teck Ming} and Kunwu Fu and Yanan Fang and Shi Chen and Sum, {T. C.} and Nripan Mathews and Mhaisalkar, {Subodh G.} and Boix, {Pablo P.} and Tom Baikie",

year = "2014",

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doi = "10.1021/jp411112k",

language = "English",

volume = "118",

pages = "16458--16462",

journal = "Journal of Physical Chemistry C",

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T2 - An alternative material for near-IR absorption perovskite solar cells

AU - Koh, Teck Ming

AU - Fu, Kunwu

AU - Fang, Yanan

AU - Chen, Shi

AU - Sum, T. C.

AU - Mathews, Nripan

AU - Mhaisalkar, Subodh G.

AU - Boix, Pablo P.

AU - Baikie, Tom

PY - 2014/7/31

Y1 - 2014/7/31

N2 - Solid-state, solution processed solar-cells based on organic-inorganic methyl ammonium lead halide absorbers have achieved efficiencies in excess of 15%, which has superseded liquid dye sensitized cells, as well as various thin film-based photovoltaics. This report introduces a new metal-halide perovskite, based on the formamidinium cation (HC(NH2)2+), that displays a favorable band gap (1.47 eV) and represents a broader absorption compared to previously reported absorbers that contained the methylammonium cation (CH3NH3+). The high open-circuit voltage (Voc = 0.97 V) and promising fill-factor (FF = 68.7%) yield an efficiency of 4.3%, which make this material an excellent candidate for this new class of perovskite solar cell. This report also investigates the formation of a black trigonal (P3m1) perovskite polymorph and a yellow hexagonal nonperovskite (P63mc) polymorph. Further solar cell development would entail the stabilization of the black trigonal (P3m1) perovskite polymorph over the yellow hexagonal nonperovskite (P63mc) polymorph.

AB - Solid-state, solution processed solar-cells based on organic-inorganic methyl ammonium lead halide absorbers have achieved efficiencies in excess of 15%, which has superseded liquid dye sensitized cells, as well as various thin film-based photovoltaics. This report introduces a new metal-halide perovskite, based on the formamidinium cation (HC(NH2)2+), that displays a favorable band gap (1.47 eV) and represents a broader absorption compared to previously reported absorbers that contained the methylammonium cation (CH3NH3+). The high open-circuit voltage (Voc = 0.97 V) and promising fill-factor (FF = 68.7%) yield an efficiency of 4.3%, which make this material an excellent candidate for this new class of perovskite solar cell. This report also investigates the formation of a black trigonal (P3m1) perovskite polymorph and a yellow hexagonal nonperovskite (P63mc) polymorph. Further solar cell development would entail the stabilization of the black trigonal (P3m1) perovskite polymorph over the yellow hexagonal nonperovskite (P63mc) polymorph.

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Formamidinium-containing metal-halide: An alternative material for near-IR absorption perovskite solar cells

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