Advanced Composites and Hybrid Materials, Journal Year: 2024, Volume and Issue: 7(6)
Published: Nov. 14, 2024
Language: Английский
Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(17), P. 6256 - 6267
Published: Jan. 1, 2024
Crystallization kinetics modulation of high-performance flexible perovskite photovoltaics achieving autonomous energy generation under outdoor settings.
Language: Английский
Citations
17
Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(22), P. 8582 - 8592
Published: Jan. 1, 2024
The defect density on the top surface of perovskite thin film was significantly higher than that in bulk. A trimming solvent treatment removed defective surface, substantially reducing concentration and strain.
Language: Английский
Citations
5
Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 505, P. 159056 - 159056
Published: Jan. 6, 2025
Language: Английский
Citations
0
ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 29, 2025
Formamidinium-based perovskites (FA perovskites) often incorporate methylammonium chloride (MACl) to stabilize the α-FAPbI3 phase and prevent formation of δ phase. However, MACl undergoes deprotonation reacts with FA, leading generation unstable byproducts that can cause component degradation negatively impact device performance. In this study, we introduce ethylenediaminetetramethylenephosphonic acid as a corrosion inhibitor, which effectively prevents these stabilizes α-FAPbI3. The resulting perovskite solar module achieved power conversion efficiency 22.44%. Furthermore, maintained approximately 83% its initial after 2136 h damp-heat testing (85 °C 85% RH), while maximum point tracking retained 88.7% 1000 h.
Language: Английский
Citations
0
ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 27, 2025
Methylammonium chloride (MACl) additive is almost irreplaceable in high-performance formamidinium (FA) perovskite photovoltaics. However, the byproduct of methyl (MFA+) from reaction MA0 and FA damages compositional purity phase stability α-FAPbI3. The addition iodine (I2) to FAPbI3 precursor has been reported inhibit formation MFA+. Here, we systematically investigate effect MAI on films devices by using replace MACl I2. results demonstrate that produces more I3- precursor, which inhibits between MA thus blocks Meanwhile, MFA+ reduced due delayed evaporation caused its strong interaction with I3-, facilitating growth α-FAPbI3 an improved bottom morphology. It eliminates unreacted PbI2, forming a homogenized phase, facilitates ordered along (111) facet, enhancing charge transport increasing open-circuit voltage (VOC). optimized device shows 2% improvement PCE, VOC 1.050 1.103 V. Additionally, target retains 97% initial performance after 5495 min operation under maximum power point tracking, compared 82.3% 2000 for control device. This work provides insights into inhibiting byproducts induced MA-FA side following introduction MACl.
Language: Английский
Citations
0
ACS Nano, Journal Year: 2025, Volume and Issue: unknown
Published: March 27, 2025
The halide perovskite formamidinium lead iodide (FAPbI3) is a prime candidate for photovoltaics due to its excellent optoelectronic properties, but application has been limited structural instability. large size of the FA cation results in metastability photoactive cubic phase and facile degradation into thermodynamically stable hexagonal phases at room temperature. Recently, incorporation two-dimensional (2D) Ruddlesden–Popper seeds FAPbI3 precursor solution was shown template growth stabilize FAPbI3. Here, we investigate nanoscale mechanisms behind observed bulk stabilization using synchrotron-based X-ray microscopies. Nanoprobe diffraction reveals 2D-templated films exhibit an average compressive strain normal substrate −3.3%, 2-fold larger than that MACl-stabilized This compression creates locally templated regions composed tetragonal-phase distributed nonuniformly throughout film with fewer crystalline defects purely regions. Scanning excited optical luminescence (X-ray analog photoluminescence) this local templating increased radiative recombination red-shifted band edge emission. Our provide insight microscopic mechanism 2D perovskites as templates.
Language: Английский
Citations
0
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 29, 2025
Abstract Amid the rapid advancement of formamidine (FA)‐based perovskite solar cells (PSCs), methylammonium chloride (MACl) has emerged as a pivotal molecule, widely recognized in achieving high‐efficiency PSCs. However, precursor solution (PPS), particularly after prolonged storage, deprotonated MA⁺ (MA 0 ) undergoes cationic addition with FA⁺, leading to relative depletion FA⁺ and reduction crystalline phase purity. Herein, using Piperazine‐2‐carboxylic acid dihydrochloride (PCADCl) inhibit deprotonation by forming strong two‐point hydrogen bonds between piperazine's amine groups proton (H⁺) MA⁺is proposed, thereby extending shelf life PPS. Furthermore, COOH PCADCl furtherly suppress while promoting coordination unbound Pb 2+ , reducing film defects improving purity phase. Additionally, energy level arrangement PSCs is improved. Benefiting from this strategy, PSC fabricated modified PPS achieves an impressive efficiency 25.56% retains 96% its initial performance aging for 20 days. Moreover, unencapsulated device 97% over 1300 h. This work significantly advances process development scientific research, representing crucial step toward large‐scale production commercialization
Language: Английский
Citations
0
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: Oct. 21, 2024
Controlling crystal growth alignment in low-dimensional perovskites (LDPs) for solar cells has been a persistent challenge, especially low-n LDPs (n < 3, n is the number of octahedral sheets) with wide band gaps (>1.7 eV) impeding charge flow. Here we overcome such transport limits by inducing vertical through addition chlorine to precursor solution. In contrast 3D halide (APbX3), find that Cl substitutes I equatorial position unit cell, strain perovskite octahedra, and critical initiating growth. Atomistic modelling demonstrates thermodynamic stability miscibility Cl/I structures indicating preferential arrangement Cl-incorporation at I-sites. Vertical persists cell level, giving rise record 9.4% power conversion efficiency 1.4 V open circuit voltage, highest reported 2 eV gap device. This study an atomic-level understanding tunability unlocks new device possibilities smart facades indoor energy generation. bandgap challenge. Here, authors induce solution, devices.
Language: Английский
Citations
3
ACS Applied Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 25, 2025
Language: Английский
Citations
0
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 7, 2025
Abstract In perovskite‐organic tandem solar cells, the wide‐bandgap perovskite front subcells with high bromide concentrations suffer from increased defect state density, which adversely affects efficiency and stability of devices. this work, a difunctional polymerizable additive, N‐(3‐(dimethylamino)propyl)‐methacrylamide (DPM), is introduced into 1.86 eV film, where it undergoes in situ thermal polymerization to form polymeric network. Primarily, polymer contains multiple functional groups that interact A‐site cations adjacent chains, creating dynamic hydrogen bond This network effectively passivates grain boundary defects, inhibits ion migration, consequently reduces non‐radiative recombination. addition, storage mixed FA + /MA precursor solution enhanced, as condensation reaction between MA efficiently suppressed by DPM. As result, study achieves power conversion (PCE) 18.19% cells. The device retains 84% its initial after operating at maximum point for 1000 h. Most notably, PCE 25.06% achieved integrating subcell monolithic cell.
Language: Английский
Citations
0