Time-Resolved Microphotoluminescence Study of Cu(In,Ga)Se<sub>2</sub>

Sakurai, Takayasu; Taguchi, Keiki; Islam, Muhammad Monirul; Ishizuka, Shogo; Yamada, A.; Matsubara, Koji; Niki, Shigeru; Akimoto, Katsuhiro

doi:10.7567/jjap.50.05fc01

Cited by 27 publications

(20 citation statements)

References 29 publications

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“…To evaluate the quality of the MA 0.6 FA 0.4 PbI 3 crystals formed under various conditions, we characterized their photoluminescence (PL) properties, in which we employed MA 0.6 FA 0.4 PbI 3 films with similar thickness of ≈300 nm. Steady‐state PL measurements of MA 0.6 FA 0.4 PbI 3 films generated from the different intermediate states indicated that non‐radiative decay was effectively suppressed when MA 0.6 FA 0.4 PbI 3 was generated from the pure intermediate phase (state II ), a solid solution of (FAI) 0.4 −PbI 2 ( Figure a).…”

Section: Photovoltaic Data Of a Batch Of Cells Measured Under Am 15gmentioning

confidence: 99%

High‐Quality Mixed‐Organic‐Cation Perovskites from a Phase‐Pure Non‐stoichiometric Intermediate (FAI)₁₋_x‐PbI₂ for Solar Cells

et al. 2015

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A high-quality mixed-organic-cation perovskite (MA)x (FA)1- x PbI3 is prepared from a phase-pure non-stoichiometric intermediate complex (FAI)1- x -PbI2 . The phase-pure (FAI)1- x -PbI2 probably facilitates homogenous nucleation and modulates the growth kinetics during the crystallization of (MA)x (FA)1- x PbI3 . This strategy can be expected to pave the way for the development of mixed-organic-cation perovskite solar cells.

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Section: Photovoltaic Data Of a Batch Of Cells Measured Under Am 15gmentioning

confidence: 99%

High‐Quality Mixed‐Organic‐Cation Perovskites from a Phase‐Pure Non‐stoichiometric Intermediate (FAI)₁₋_x‐PbI₂ for Solar Cells

et al. 2015

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“…Одним из методов, позволяющих исследовать кинетику гибели фотогенерированных носителей тока, является метод время-разрешенной люминесценции [12,13], основанный на исследовании кинетики затухания спектра излучения. Однако этим методом регистрируются только процессы, протекающие с излучением света, например рекомбинационная люминесценция.…”

Section: экспериментальная частьunclassified

Влияние Содержания Меди На Кинетику Микроволновой Фотопроводимости Твердых Растворов CIGS

Новиков¹,

Rabenok²,

Orishina³

et al. 2019

Физика И Техника Полупроводников

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The kinetics of the photoresponse of microwave photoconductivity (9 GHz, TE_101-type cavity) on excitation by laser light pulses with a wavelength of 337 nm and a duration of 8 ns in copper-deficient Cu_1 –_ x (In_0.7Ga_0.3)Se_2 (CIGS) (0 < x ≤ 0.4) solid solutions with the chalcopyrite structure is investigated in a wide light intensity range. With an increase in the laser radiation density to ~5 × 10^14 photon/cm^2 per pulse, the photoresponse acquires, along with the previously revealed skin effect, the effect of the filling of traps created by V _Cu vacancies and Cu^+2 · V _Cu defect associates, the concentration of which increases with a decrease in x in the CIGS formula.

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“…To understand the fundamental properties of the CIGS and CZTS materials and improve their solar‐cell efficiencies, it is essential to reveal the photogenerated carrier dynamics related to the recombination, localization, and charge separation processes. So far, photoluminescence (PL) spectroscopy has been widely used for the study of photocarrier recombination dynamics in these solar‐cell materials . Because the PL of CIGS and CZTS is mainly caused by the radiative recombination between carriers localized in donor and acceptor states, the dynamics of the free photocarriers in the conduction and valence bands remain unclear.…”

Section: Introductionmentioning

confidence: 99%

Photocarrier dynamics in CIGS, CZTS, and related materials revealed by ultrafast optical spectroscopy

Okano

Phuong

Kanemitsu

2015

Physica Status Solidi (b)

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We discuss the photocarrier dynamics in emerging thin-film solar-cell materials, Cu(In,Ga)Se 2 (CIGS), Cu 2 ZnSnS 4 (CZTS), and CdTe-based nanocrystals (NCs), using timeresolved photoluminescence and femtosecond pump-probe spectroscopy. In CIGS and CZTS samples, we found longlived free photocarriers and slow intraband relaxation at room temperature. These distinctive behaviors of the free carriers are considered common features in multinary semiconductors and are related to the complicated near-band edge structure due to potential fluctuations, which might affect solar-cell efficiencies. We revealed the relationship in CdTe-based type-II NCs between hot carrier transfer and intraband relaxation, providing a better understanding of the charge separation mechanism in multinary semiconductors. We also demonstrated the usefulness of ultra-fast optical spectroscopy techniques for clarifying the photocarrier dynamics in various semiconducting bulk and nano-structure materials for solar cells.

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Time-Resolved Microphotoluminescence Study of Cu(In,Ga)Se₂

Cited by 27 publications

References 29 publications

High‐Quality Mixed‐Organic‐Cation Perovskites from a Phase‐Pure Non‐stoichiometric Intermediate (FAI)₁₋_x‐PbI₂ for Solar Cells

High‐Quality Mixed‐Organic‐Cation Perovskites from a Phase‐Pure Non‐stoichiometric Intermediate (FAI)₁₋_x‐PbI₂ for Solar Cells

Влияние Содержания Меди На Кинетику Микроволновой Фотопроводимости Твердых Растворов CIGS

Photocarrier dynamics in CIGS, CZTS, and related materials revealed by ultrafast optical spectroscopy

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Time-Resolved Microphotoluminescence Study of Cu(In,Ga)Se2

Cited by 27 publications

References 29 publications

High‐Quality Mixed‐Organic‐Cation Perovskites from a Phase‐Pure Non‐stoichiometric Intermediate (FAI)1−x‐PbI2 for Solar Cells

High‐Quality Mixed‐Organic‐Cation Perovskites from a Phase‐Pure Non‐stoichiometric Intermediate (FAI)1−x‐PbI2 for Solar Cells

Влияние Содержания Меди На Кинетику Микроволновой Фотопроводимости Твердых Растворов CIGS

Photocarrier dynamics in CIGS, CZTS, and related materials revealed by ultrafast optical spectroscopy

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Time-Resolved Microphotoluminescence Study of Cu(In,Ga)Se₂

High‐Quality Mixed‐Organic‐Cation Perovskites from a Phase‐Pure Non‐stoichiometric Intermediate (FAI)₁₋_x‐PbI₂ for Solar Cells

High‐Quality Mixed‐Organic‐Cation Perovskites from a Phase‐Pure Non‐stoichiometric Intermediate (FAI)₁₋_x‐PbI₂ for Solar Cells