A new co-solvent assisted CuSCN deposition approach for better coverage and improvement of the energy conversion efficiency of corresponding mixed halides perovskite solar cells

Khorasani, Azam; Marandi, Maziar; zad, Azam Iraji; Taghavinia, Nima

doi:10.1007/s10854-019-01515-6

Cited by 10 publications

(5 citation statements)

References 41 publications

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“…Figure b shows the corresponding energy band diagram of each layer of the PeLED. The valence band edge levels ( E v ) of the NiO x :Cu and the nanocomposite layers were determined by UV photoelectron spectroscopy (UPS) (Figure S5), and the others were obtained according to previous reports. , In Figure c, the PeLED with a NiO x :Cu HTL (PeLED-B) can be turned on at a lower voltage of 3.4 V to achieve a higher luminance of 1780 cd/m 2 at 6 V compared to that using CuSCN for hole transport (PeLED-A). Considering the E v shown in Figure b, the capability of the hole transportation for CuSCN should be as good as that of the NiO x :Cu NPs.…”

Section: Resultsmentioning

confidence: 99%

Cs₄PbBr₆/CsPbBr₃ Nanocomposites for All-Inorganic Electroluminescent Perovskite Light-Emitting Diodes

Huang

et al. 2020

ACS Appl. Nano Mater.

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In this study, the facile synthesis and electroluminescent perovskite light-emitting diodes (PeLEDs) of highly luminescent Cs 4 PbBr 6 /CsPbBr 3 nanocomposite has been demonstrated. With the addition of proper antisolvents, the nanocomposite with a production yield of >90% and quantum yield of >85% was readily derived from the transformation of CsPbBr 3 powder. The obtained high quantum yield of the green nanocomposite originated from the fluorescent CsPbBr 3 nanocrystals embedded in the Cs 4 PbBr 6 matrix, which was verified by Xray diffraction, absorption, photoluminescence (PL), and PL excitation spectra. The addition of large cation precursors, such as CsBr and CH(NH 2 ) 2 Br, could contribute to the transformation efficiency and had no influence on the composition of the embedded nanocrystals. Via the thermal evaporation of the nanocomposite, all-inorganic electroluminescent PeLEDs with CuSCN and Cu-doped NiO x (NiO x :Cu) nanoparticles were fabricated and characterized. A maximum luminance of 1780 cd/m 2 and efficiency of 0.43 cd/A were achieved. Thus, the luminescent Cs 4 PbBr 6 /CsPbBr 3 nanocomposite is a promising material for nextgeneration displays and lighting.

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Section: Resultsmentioning

confidence: 99%

Cs₄PbBr₆/CsPbBr₃ Nanocomposites for All-Inorganic Electroluminescent Perovskite Light-Emitting Diodes

Huang

et al. 2020

ACS Appl. Nano Mater.

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“…For a suitable HTM, proper energy-level alignment, high hole mobility, being dopant-free, good stability, and simple deposition are significant factors . Inorganic HTMs can intrinsically demonstrate higher hole mobility, better stability, and lower cost of synthesis compared to organic materials. , Among them, inorganic copper-based materials such as CuI, CuO x , Cu 2 O, CuSCN, and copper indium gallium disulfide (CIGS) compounds have been introduced as spiro-OMeTAD replacements in PSCs. − …”

Section: Introductionmentioning

confidence: 99%

Optimization of CuIn_1–XGa_XS₂ Nanoparticles and Their Application in the Hole-Transporting Layer of Highly Efficient and Stable Mixed-Halide Perovskite Solar Cells

Khorasani

Marandi

Khosroshahi³

et al. 2019

ACS Appl. Mater. Interfaces

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Inorganic hole-transport materials (HTMs) have been frequently applied in perovskite solar cells (PSCs) and are a promising solution to improve the poor stability of PSCs. In this study, we investigate solution-processed copper indium gallium disulfide (CIGS) nanocrystals (NCs) as a dopant-free inorganic HTM in n–i–p type PSCs. Moreover, Cs0.05(MA0.17-FA0.83)0.95Pb(I0.83Br0.17)3 mixed-halide perovskite with proper crystalline quality and long-time stability was utilized as the light-absorbing layer under ambient conditions. To optimize the cell performance and better charge extraction from the perovskite layer, the Ga concentration in the Cu(In1–X Ga X )S2 composition was changed, and the X value was altered between 0.0 and 0.75. It was shown that the CIGS band gap enhances with increasing Ga content; thus, with tunable band gaps and engineering of the energy level alignment, a better collection of photogenerated holes and a reduced electron–hole recombination rate could be achieved. The maximum power conversion efficiency of 15.6% was obtained for the PSC with Cu(In0.5Ga0.5)S2 hole-transport layer composition, which is the highest efficiency reported so far for CIGS-based dopant-free PSCs. This value is very close to the efficiency of devices fabricated with doped spiro-OMeTAD as an organic HTM. Additionally, the stability of nonencapsulated PSCs was studied, and CIGS-based devices demonstrated 70% retention after 90 days of aging in the dark and in 50% relative humidity conditions. This result is quite better than the similar measurements for the doped spiro-OMeTAD-based devices.

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“…Jen and coworkers reported the use of solution-processed CuSCN and obtained a much higher PCE of 16.0% . Since then, ample research has been performed for the incorporation of CuSCN in various n–i–p and p–i–n architectures, resulting in maximum PCEs of 22.0 and 19.19%, respectively. , Despite significant efforts on CuSCN as an efficient HTL in PSCs, − it is surprising that very little is known about its higher chalcogen analogue copper (I) selenocyanate (CuSeCN) as an HTL. It is worth mentioning that selenium analogues have been shown to have different properties compared to sulfur analogues because the electronegativity of selenium is weaker and the size of the selenium atom is bigger than that of sulfur. , …”

Section: Introductionmentioning

confidence: 99%

Low-Temperature Aqueous Ammonia-Processed Copper (I) Selenocyanate Hole-Transporting Material for Efficient Inverted Perovskite Solar Cells

Kedia,

Majhi,

Balkhandia

et al. 2023

ACS Appl. Energy Mater.

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Significant efforts have been reported on copper(I) thiocyanate (CuSCN) as an efficient hole-transporting layer (HTL) for perovskite solar cells. Surprisingly, its higher chalcogen analogue copper (I) selenocyanate (CuSeCN) is unexplored yet, even though CuSeCN has been shown to have different properties compared to CuSCN because of its different electronegativity, polarizability, and size (Se vs S atoms). In this work, we report the synthesis of CuSeCN as an HTL in perovskite solar cells via low-temperature solution-processable deposition from an aqueous ammonia solution. The transparency and thermal stability of CuSeCN films were examined by the deposition of thin films from an aqueous ammonia solution under ambient conditions. The structural, electrical, optical, and morphological properties of the CuSeCN films were characterized by X-ray diffraction, XPS, FTIR, cyclic voltammetry, UV–vis–NIR spectroscopy, and field emission scanning electron microscopy. A single-step fast deposition–crystallization method was used to fabricate low-temperature CuSeCN-based inverted planar perovskite solar cells, with device architecture indium tin oxide (ITO)/CuSeCN/CH3NH3PbI3/PC61BM/BCP/Ag. Furthermore, to examine the effect of the thickness of the HTL on device performance, three different concentrations of CuSeCN solution were used for thin-film deposition in perovskite solar cells. The annealing temperature of the HTL films was optimized to obtain the highest possible device performance. A maximum power conversion efficiency (PCE) of 13.59% (V oc = 0.99 V, J sc = 18.8 mA/cm2, and FF = 0.73) was achieved with 7.5 mg mL–1 of CuSeCN solution, along with negligible J–V hysteresis and reproducibility of device performance.

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A new co-solvent assisted CuSCN deposition approach for better coverage and improvement of the energy conversion efficiency of corresponding mixed halides perovskite solar cells

Cited by 10 publications

References 41 publications

Cs₄PbBr₆/CsPbBr₃ Nanocomposites for All-Inorganic Electroluminescent Perovskite Light-Emitting Diodes

Cs₄PbBr₆/CsPbBr₃ Nanocomposites for All-Inorganic Electroluminescent Perovskite Light-Emitting Diodes

Optimization of CuIn_1–XGa_XS₂ Nanoparticles and Their Application in the Hole-Transporting Layer of Highly Efficient and Stable Mixed-Halide Perovskite Solar Cells

Low-Temperature Aqueous Ammonia-Processed Copper (I) Selenocyanate Hole-Transporting Material for Efficient Inverted Perovskite Solar Cells

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A new co-solvent assisted CuSCN deposition approach for better coverage and improvement of the energy conversion efficiency of corresponding mixed halides perovskite solar cells

Cited by 10 publications

References 41 publications

Cs4PbBr6/CsPbBr3 Nanocomposites for All-Inorganic Electroluminescent Perovskite Light-Emitting Diodes

Cs4PbBr6/CsPbBr3 Nanocomposites for All-Inorganic Electroluminescent Perovskite Light-Emitting Diodes

Optimization of CuIn1–XGaXS2 Nanoparticles and Their Application in the Hole-Transporting Layer of Highly Efficient and Stable Mixed-Halide Perovskite Solar Cells

Low-Temperature Aqueous Ammonia-Processed Copper (I) Selenocyanate Hole-Transporting Material for Efficient Inverted Perovskite Solar Cells

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Cs₄PbBr₆/CsPbBr₃ Nanocomposites for All-Inorganic Electroluminescent Perovskite Light-Emitting Diodes

Cs₄PbBr₆/CsPbBr₃ Nanocomposites for All-Inorganic Electroluminescent Perovskite Light-Emitting Diodes

Optimization of CuIn_1–XGa_XS₂ Nanoparticles and Their Application in the Hole-Transporting Layer of Highly Efficient and Stable Mixed-Halide Perovskite Solar Cells