2022
DOI: 10.1039/d2ta00026a
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Efficient MA-free perovskite solar cells with balanced carrier transport achieved using 4-trifluorophenylammonium iodide

Abstract: The treatment of 3D perovskite film with 2D perovskite segments has been recognized as a promising approach to improve device performance of perovskite solar cells (PSCs), which has received much...

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Cited by 11 publications
(10 citation statements)
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“…Li et al prepared 2D/3D perovskite without MA using a novel bulky organic molecule: 4‐trifluorophenylammonium iodide (TFPAI). [ 111 ] In their study, the same measurements and analyses were performed and similar results were obtained, with the ratio of electron‐to‐hole mobility changing from 3.16 to 0.83, while the FF of the final device increased from 76.7% to 82.0%. It should be added here that the electrical properties of 2D/3D heterojunctions will be affected by illumination.…”
Section: Advantages Of 2d/3d Perovskitementioning
confidence: 59%
“…Li et al prepared 2D/3D perovskite without MA using a novel bulky organic molecule: 4‐trifluorophenylammonium iodide (TFPAI). [ 111 ] In their study, the same measurements and analyses were performed and similar results were obtained, with the ratio of electron‐to‐hole mobility changing from 3.16 to 0.83, while the FF of the final device increased from 76.7% to 82.0%. It should be added here that the electrical properties of 2D/3D heterojunctions will be affected by illumination.…”
Section: Advantages Of 2d/3d Perovskitementioning
confidence: 59%
“…The steady-state photoluminescence (PL), time-resolved photoluminescence (TRPL), and space-charge-limited current (SCLC) were conducted to gain further understanding of defect passivation. As shown in Figure f, the CsPbIBr 2 film treated by 14-FABA exhibits the highest PL intensity and undergoes a noticeable blue-shift compared to both the control and film modified by 13-FABA . In the TRPL (Figure S17 and Table S2), the film modified with 14-FABA exhibited the longest average PL lifetime (τ avg ) of 8.04 ns compared to the control film (6.35 ns) and the film modified by 13-FABA (6.54 ns), indicating the lowest nonradiative recombination.…”
Section: Resultsmentioning
confidence: 92%
“…As shown in Figure 4f, the CsPbIBr 2 film treated by 14-FABA exhibits the highest PL intensity and undergoes a noticeable blue-shift compared to both the control and film modified by 13-FABA. 38 In the TRPL (Figure S17 and Table S2), the film modified with 14-FABA exhibited the longest average PL lifetime (τ avg ) of 8.04 ns compared to the control film (6.35 ns) and the film modified by 13-FABA (6.54 ns), indicating the lowest nonradiative recombination. From the SCLC (Figure S18), the trap-state density (N d ) and electron mobility (μ e ) of the perovskite films can be quantitatively assessed (as described in Supporting Information) with the electron-only configuration of FTO/SnO 2 /perovskite/PC61BM/Ag devices.…”
Section: Resultsmentioning
confidence: 99%
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