2018
DOI: 10.1039/c7ta11154a
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Enhanced performance via partial lead replacement with calcium for a CsPbI3 perovskite solar cell exceeding 13% power conversion efficiency

Abstract: Partial replacement of Pb in CsPbI3 perovskite solar cells with Ca enhances power conversion efficiency to 13.5% under reverse scan (stabilised at 13.3%), without sacrificing stability.

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Cited by 213 publications
(167 citation statements)
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“…Moreover, the crystal structure of the CsPbI 3 QDs film is investigated using 2D X‐ray diffraction (2D‐XRD), as shown in Figure S2 of the Supporting Information. This result confirms the cubic structure of CsPbI 3 film after ligand exchange …”
Section: Resultssupporting
confidence: 84%
See 1 more Smart Citation
“…Moreover, the crystal structure of the CsPbI 3 QDs film is investigated using 2D X‐ray diffraction (2D‐XRD), as shown in Figure S2 of the Supporting Information. This result confirms the cubic structure of CsPbI 3 film after ligand exchange …”
Section: Resultssupporting
confidence: 84%
“…In this regard, most people have worked on the composition of perovskite films by adding halide salts, organic compounds, and metal elements to increase the entropy and thus the stability of the system . For instance, Lau et al tuned the composition of CsPbI 3 perovskite films by incorporation of calcium and stabilized the cubic phase of the perovskite film, resulting in a PSC device with over 13% efficiency. In the case of phase confinement, previously, Waleed et al successfully grew stable CsPbI 3 nanowire perovskite with cubic phase inside anodized aluminum oxide membranes using chemical vapor deposition (CVD) technique for photodetecting application.…”
Section: Introductionmentioning
confidence: 99%
“…Among all the inorganic perovskites, the mixed halide CsPbI 2 Br has attracted intensive attention due to its excellent thermal/light soaking stability and suitable direct bandgap, potentially in the front cell for perovskite‐silicon hybrid tandem applications 7. Numerous studies have been carried out regarding CsPbI 2 Br PSCs 8–12. The highest reported PCE of 16.58% has been achieved by using organic ammoniums to treat the surface of the CsPbI 2 Br film 13…”
Section: Introductionmentioning
confidence: 99%
“…Although similar bandgap could also be obtained from the organicinorganic mixed halide perovskite by tuning the halide composition, halide segregation could be a source of photo instability. [7] Other strategies for stabilizing CsPbI 3 which are also effective in improving cell performance include the use of dimethyl sulfoxide (DMSO) introducing intermediate phase for perovskite formation, [13,14] reducing grain size, [15] incorporating other metallic element to the B site in the ABX 3 perovskite [16,17] and the use of bulky organic cations on top of perovskite to pas sivate the device, [18][19][20][21][22][23] resulting in the highest PCE of 17.1%. [2] Phase instability has been the main challenge of CsPbI 3 cells, due to transition to the undesirable nonperovskite yellow phase (δCsPbI 3 ).…”
mentioning
confidence: 99%