High-efficiency MA1−z
 FA
 z
 Pbl3−x
 Cl
 x
 perovskite solar cells via mixed A-site cations in the lattice

Chen, Chunyang; Huang, Jin; Zhang, Fanghui; Wang, Hao; Shi, Kewang; Liu, Shengzhong

doi:10.1088/1361-6641/ac9e16

Cited by 4 publications

(6 citation statements)

References 34 publications

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“…MA 0.6 FA 0.4 PbI 3− x Cl x ‐based PSCs show the most outstanding performance in this system, the open circuit voltage ( V oc ), fill factor (FF), and J sc are all enhanced marginally. [ 37 ] Nonetheless, its low theoretical J sc still restricts its progress severely. Therefore, this work was carried out on the basis of previous MA 0.6 FA 0.4 PbI 3− x Cl x PSCs.…”

Section: Resultsmentioning

confidence: 99%

“…The voltage exhibits a rapid development trend, indicating that the trap density ( N t ) is being occupied. Analyzing by the following formula [ 37 ]

N_{\text{t}} = \frac{2 \left(\epsilon\right)_{0} \epsilon V_{\text{TFL}}}{\text{e} L^{2}}

where L is the thickness of the film, ε is the relative dielectric constant, and V TFL can be obtained at the kink point in the diagram. The results showed that the ( N t ) of MA 0.6 FA 0.4 PbI 3− x Cl x ‐ K‐NAA (0.03 mol%) film is 7.03 × 10 15 , much lower than that of the reference (6.3 × 10 15 ), which shows that using KNN to passivate perovskite films is effective.…”

Section: Resultsmentioning

confidence: 99%

“…The voltage exhibits a rapid development trend, indicating that the trap density (N t ) is being occupied. Analyzing by the following formula [37]…”

Section: Resultsmentioning

confidence: 99%

“…The solution was heated and agitated for 12 h at 70 °C to dissolve the solute altogether. [37] Preparation of MA 0.6 FA 0.4 PbI 3Àx Cl x -C 12 H 9 KO 2 (y mol%) Precursor Solution: Obtaining a small quantity of K-NAA (C 12 H 9 KO 2 ) with precision using equipment is challenging. Therefore, K-NAA was dissolved into N, N-Dimethylformamide (DMF) using a concentration gradient with 0.00, 0.01, 0.02, 0.03, and 0.04 mol%.…”

Section: Methodsmentioning

confidence: 99%

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Improve Perovskite Solar Cell Stability and Efficiency via Multifunctional Multiple‐Ring Aromatic Dopant Passivation

et al. 2023

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Organic-inorganic hybrid halide perovskites are extensively applied in solar cells as a new absorber candidate due to their low exciton splitting energy, long carrier diffusion length, wide absorption range, and adjustable energy bandgap. [1][2][3] Represented by mixed halide MAPbI 3 perovskite, it has an appropriate tolerance factor and comparatively lower temperature required for phase transition. [4,5] It provides an excellent compromise between internal structure stability and the performance of radiation absorption (bandgap 1.8-1.93 eV). [6] It can be manufactured as a top device for constructing monolithic tandem solar cells. [7,8] According to the latest report, the power conversion efficiency (PCE) of devices with traditional single sections has climbed to 25.7%. [9] In comparison, tandem perovskite solar cells (PSCs) have a higher performance of 29.1%, [10] similar to crystalline silicon and other inorganic semiconductor solar cells. Concurrently, the traditional used solution spin coating processing and various crystallization methods are extensively utilized in the preparation of perovskite films because of the cheap cost, ease, and straightforward upgradeability. [11] PSCs have significant commercialization potential.However, perovskite films prepared using the spin-coating method may contain a large number of defects, generally regarded as recombination centers where nonradiative recombination occurs. [10,12] These unavoidable surface and boundary defects during the manufacturing process [13] severely restrict the further development of PSCs applications. [14] In addition, due to the existence of CH 3 NH 3 þ (MA þ ) cations with hygroscopic properties, [15,16] the long-term stability of devices using MAPbI 3 as the absorbent layer is poor, and they are effortless to decompose under conditions such as exposure to air, heat, and light. Therefore, passivating defects to decrease energy loss and improve the environmental stability of devices has become an urgent problem. Up to now, people have conducted extensive research on the issue of limiting the defects in PSCs and have reached certain conclusions. The studies have shown that the ester group (-COOR) can form complexes to protect FA þ , hence effectively preventing the perovskite decomposition by nucleophilic groups. [17] Moreover, by plasma crosslinking polymerization with Pb 2þ , the C═O bond in the ester group can strengthen the anchoring effect on the crystal surface. [18] As a result, the ester group, which can exert numerous passivation effects, is regarded as a significant and efficient group in improving the performance of PSCs. Sun et al. demonstrated that according to Goldschmidt tolerance factors, [19] metal ions such as K þ , [20] Rb þ , [21] Cu þ , [22] Ni 2þ , [23] Zn 2þ , [24] Al 3þ , [25] and Sb 3þ [26] are too tiny that incorporated into perovskite crystals. [10] These minor radius ions may establish

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Section: Resultsmentioning

confidence: 99%

“…The voltage exhibits a rapid development trend, indicating that the trap density ( N t ) is being occupied. Analyzing by the following formula [ 37 ]

N_{\text{t}} = \frac{2 \left(\epsilon\right)_{0} \epsilon V_{\text{TFL}}}{\text{e} L^{2}}

Section: Resultsmentioning

confidence: 99%

“…The voltage exhibits a rapid development trend, indicating that the trap density (N t ) is being occupied. Analyzing by the following formula [37]…”

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Improve Perovskite Solar Cell Stability and Efficiency via Multifunctional Multiple‐Ring Aromatic Dopant Passivation

et al. 2023

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“…Where C o and C f are initial and final phosphate concentrations; q t is the amount of phosphate adsorbed at time t, V is the volume solution and m is the mass of adsorbent used [61] …”

Section: Methodsmentioning

confidence: 99%

Hydrothermal Synthesis of Mg modified Nanobiochar from Spent Coffee Grounds for Effective Phosphate Removal: Kinetic and Isotherm Studies

Begna Sisaya,

Leul Mekonnen

2023

ChemistrySelect

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Phosphate removal/recovery is essential to maintain the quality of aquatic systems and ensure sustainable use of phosphorous. Herein Mg‐nano biochar (Mg/NBC) is prepared as an effective phosphate adsorbent through the valorization of spent coffee grounds into nanobiochar by hydrothermal acid digestion of its biochar resulting from a slow pyrolysis. Characterization of the adsorbent was done by SEM, FTIR, BET, and XRD. Mg/NBC showed a 12.84 % higher adsorption capacity than the unmodified nanobiochar. Adsorption studies confirmed that phosphate adsorption on Mg/NBC is favored in acidic conditions removing 95 % of the initial concentrations at pH 1. The Langmuir adsorption isotherm model is better fitted to the equilibrium data with a maximum adsorption capacity of 100 mg/g suggesting uniform monolayer adsorption. Phosphate adsorption on Mg/NBC was initially rapid and followed a pseudo‐second‐order kinetic with an equilibrium constant (K2) of 0.029 g/mg.min. Thermodynamic investigation at different temperatures revealed negative ΔG°, positive ΔH° and ΔS° values suggesting a spontaneous endothermic process involving the chemisorption of phosphate at the later stage of the adsorption. Further, the application of the prepared adsorbent in real wastewater resulted in 90 % phosphate removal suggesting the promising potential of the prepared adsorbent for practical use in phosphate removal/recovery.

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High-quality perovskite toward planar MA0.6FA0.4PbI3-xClx-β-NaYF4:Yb/Er of strong responsivity in photodetector application

et al. 2023

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High-efficiency MA_1−zFA _z Pbl_3−xCl _x perovskite solar cells via mixed A-site cations in the lattice

Cited by 4 publications

References 34 publications

Improve Perovskite Solar Cell Stability and Efficiency via Multifunctional Multiple‐Ring Aromatic Dopant Passivation

Improve Perovskite Solar Cell Stability and Efficiency via Multifunctional Multiple‐Ring Aromatic Dopant Passivation

Hydrothermal Synthesis of Mg modified Nanobiochar from Spent Coffee Grounds for Effective Phosphate Removal: Kinetic and Isotherm Studies

High-quality perovskite toward planar MA0.6FA0.4PbI3-xClx-β-NaYF4:Yb/Er of strong responsivity in photodetector application

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High-efficiency MA1−z FA z Pbl3−x Cl x perovskite solar cells via mixed A-site cations in the lattice

Cited by 4 publications

References 34 publications

Improve Perovskite Solar Cell Stability and Efficiency via Multifunctional Multiple‐Ring Aromatic Dopant Passivation

Improve Perovskite Solar Cell Stability and Efficiency via Multifunctional Multiple‐Ring Aromatic Dopant Passivation

Hydrothermal Synthesis of Mg modified Nanobiochar from Spent Coffee Grounds for Effective Phosphate Removal: Kinetic and Isotherm Studies

High-quality perovskite toward planar MA0.6FA0.4PbI3-xClx-β-NaYF4:Yb/Er of strong responsivity in photodetector application

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High-efficiency MA_1−zFA _z Pbl_3−xCl _x perovskite solar cells via mixed A-site cations in the lattice