Perovskite nanostructures for photovoltaic and energy storage devices

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Abstract

Exploring perovskite nanostructured materials of different morphologies, structures and compositions as viable materials for high performance energy technologies.

Abstract

Exploring prospective materials for efficient energy production and storage is a big challenge in this century. Numerous research groups working in this field focus on novel materials for such applications and this is reflected in the large number of articles on the topic. At the same time, there has recently been increasing interest in fabricating entirely new types of devices and even exploring new physics, by structuring matter at the nanoscale. Nanostructured materials are acknowledged as viable materials to effectively replace conventional energy materials in such energy applications. Among these nanostructured materials, in this review article we focus on perovskite nanomaterials, such as perovskite oxides and halide perovskites, utilized in high performance energy technologies, including photovoltaics, supercapacitors and batteries. The various approaches used for the fabrication of perovskite nanostructures with centrosymmetric or non-centrosymmetric morphologies are particularly reviewed, while the impact of the structure, morphology, and composition on energy device performance is extensively discussed.

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Organometal halide perovskites as visible-light sensitizers for photovoltaic cells.

Akihiro Kojima, Kenjiro Teshima, Yasuo Shirai … (2009)

Two organolead halide perovskite nanocrystals, CH(3)NH(3)PbBr(3) and CH(3)NH(3)PbI(3), were found to efficiently sensitize TiO(2) for visible-light conversion in photoelectrochemical cells. When self-assembled on mesoporous TiO(2) films, the nanocrystalline perovskites exhibit strong band-gap absorptions as semiconductors. The CH(3)NH(3)PbI(3)-based photocell with spectral sensitivity of up to 800 nm yielded a solar energy conversion efficiency of 3.8%. The CH(3)NH(3)PbBr(3)-based cell showed a high photovoltage of 0.96 V with an external quantum conversion efficiency of 65%.

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Nanocrystals of Cesium Lead Halide Perovskites (CsPbX3, X = Cl, Br, and I): Novel Optoelectronic Materials Showing Bright Emission with Wide Color Gamut

Loredana Protesescu, Sergii Yakunin, Maryna Bodnarchuk … (2015)

Metal halides perovskites, such as hybrid organic–inorganic CH3NH3PbI3, are newcomer optoelectronic materials that have attracted enormous attention as solution-deposited absorbing layers in solar cells with power conversion efficiencies reaching 20%. Herein we demonstrate a new avenue for halide perovskites by designing highly luminescent perovskite-based colloidal quantum dot materials. We have synthesized monodisperse colloidal nanocubes (4–15 nm edge lengths) of fully inorganic cesium lead halide perovskites (CsPbX3, X = Cl, Br, and I or mixed halide systems Cl/Br and Br/I) using inexpensive commercial precursors. Through compositional modulations and quantum size-effects, the bandgap energies and emission spectra are readily tunable over the entire visible spectral region of 410–700 nm. The photoluminescence of CsPbX3 nanocrystals is characterized by narrow emission line-widths of 12–42 nm, wide color gamut covering up to 140% of the NTSC color standard, high quantum yields of up to 90%, and radiative lifetimes in the range of 1–29 ns. The compelling combination of enhanced optical properties and chemical robustness makes CsPbX3 nanocrystals appealing for optoelectronic applications, particularly for blue and green spectral regions (410–530 nm), where typical metal chalcogenide-based quantum dots suffer from photodegradation.