BT-MA0.6FA0.4PbI3–xClx Unsymmetrical Perovskite for Solar Cells with Superior Stability and PCE over 23%

Huang, Jin; Chen, Chunyang; Li, Yiming; Wang, Hao; Zhang, Fanghui; Zhang, Dan

doi:10.1021/acsaem.2c01699

Cited by 5 publications

(3 citation statements)

References 42 publications

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“…Simultaneously, enhancing carrier transport ability permits the split excitons to be caught by electrodes more quickly. [ 46 ] However, continuing to increase the doping ratio of K‐NAA exceeding 0.03, the PL intensity begins to reduce. This is highly consistent with the analysis of SEM and EIS.…”

Section: Resultsmentioning

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%

“…These prove that the carrier mobility is better than that of MA 0.6 FA 0.4 PbI 3Àx Cl x PSCs. [18,46] More carriers are accepted by electrodes before recombination, resulting in a high charge collection efficiency. This result further demonstrates that doping K-NAA can decrease the defect density of the films.…”

Section: Resultsmentioning

confidence: 99%

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

et al. 2023

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“…This characteristic offers unlimited possibilities for advancing perovskite solar cells (PSCs). Also, PSCs have many unique characteristics, including their easy acquisition of raw materials, simplicity, and low production cost [9]. Because of these characteristics, PSCs can reach a power conversion efficiency (PCE) of more than 25.7% over a short period of about 10 years [10], which is equal to the level of silicon-based solar cells.…”

Section: Introductionmentioning

confidence: 99%

Polymer Poly (Ethylene Oxide) Additive for High-Stability All-Inorganic CsPbI3−xBrx Perovskite Solar Cells

Chen,

Zhang,

Huang

et al. 2023

Energies

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All-inorganic CsPbI3−xBrx perovskite solar cells (PSCs) are becoming increasingly mature due to their excellent optoelectronic properties. However, because of the poor environmental stability of the perovskite material, the device is susceptibly decomposed when exposed to moisture, high temperature, and high illumination. Therefore, a critical task is to address the problem of poor long-term stability in the environment, which serves as a significant obstacle impeding the commercialization of perovskite solar cells. This article introduces the incorporation of PEO into all-inorganic CsPbI3−xBrx perovskites with an advantageous thermal stability. PEO acts as a passivating agent near the grain boundary, and its high viscosity characteristics effectively improve the film-forming properties, leading to a substantial reduction in defects and to improving the surface uniformity. In addition, the grain boundaries that serve as water and oxygen penetration channels are filled, resulting in a substantial improvement in device stability. With 7.5 mg/mL PEO doping into CsPbI3−xBrx, the unencapsulated device maintained its original power conversion efficiency of 98% after being placed in a dark environment of 40% humidity and 25 °C for 10 days. Using PEO effectively enhanced the performance of the devices, with the highest PCE reaching 10.95%, significantly improving environmental stability.

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Adjustable Skeleton of Bilateral Lewis Base Passivator for CsPbI3 Perovskite Solar Cells with PCE over 20% and Superior Stability

Huang

Wang

Chen

et al. 2023

Chemical Engineering Journal

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BT-MA_0.6FA_0.4PbI_3–xCl_x Unsymmetrical Perovskite for Solar Cells with Superior Stability and PCE over 23%

Cited by 5 publications

References 42 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

Polymer Poly (Ethylene Oxide) Additive for High-Stability All-Inorganic CsPbI3−xBrx Perovskite Solar Cells

Adjustable Skeleton of Bilateral Lewis Base Passivator for CsPbI3 Perovskite Solar Cells with PCE over 20% and Superior Stability

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