2020
DOI: 10.1039/d0ta02706e
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Asymmetric alkyl diamine based Dion–Jacobson low-dimensional perovskite solar cells with efficiency exceeding 15%

Abstract: DMAPA2+ as a diammonium spacer cation to balance high efficiency and high stability for low-dimensional Dion–Jacobson perovskite solar cells.

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Cited by 44 publications
(34 citation statements)
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“…Accordingly, the first examples of n = 1 PSCs showed short-circuit current (J SC ) as low as 0.06 mA cm -2 and a corresponding PCE of 0.01%. [206] This was subsequently improved to almost 4% PCE by optimizing the charge transport in 2D materials through the engineering of the spacer cation, [56,70,207] yet still well below the efficiencies of >25% reported for solar cells based on 3D perovskites.…”
Section: Single Perovskite Junction Solar Cell Architecturesmentioning
confidence: 97%
See 2 more Smart Citations
“…Accordingly, the first examples of n = 1 PSCs showed short-circuit current (J SC ) as low as 0.06 mA cm -2 and a corresponding PCE of 0.01%. [206] This was subsequently improved to almost 4% PCE by optimizing the charge transport in 2D materials through the engineering of the spacer cation, [56,70,207] yet still well below the efficiencies of >25% reported for solar cells based on 3D perovskites.…”
Section: Single Perovskite Junction Solar Cell Architecturesmentioning
confidence: 97%
“…explain why devices fabricated with n = 1 LPKs achieve such low efficiencies-typically less than 4%. [55,56]…”
Section: Optoelectronic Properties Of Layered Perovskitesmentioning
confidence: 99%
See 1 more Smart Citation
“…[ 209–212 ] For example, alkyl diammonium 3‐(dimethylammonium)‐1‐propylammonium (DMAPA 2+ ) with asymmetric structure as an organic spacer helped to form better DJ perovskite (DMAPA)MA n −1 Pb n I 3 n +1 film with vertical crystal orientation, hierarchical phase distribution, and low trap density when n value is 4 rather than (DMAPA)MA n −1 Pb n I 3 n +1 with other n values. [ 213 ] In another work, high‐quality 3‐(aminomethyl) piperidinium (3AMP 2+ )‐based DJ perovskite (3AMP)(MA 0.75 FA 0.25 ) 3 Pb 4 I 13 films were obtained via compositional engineering (mixed FA and MA in the A site) and solvent engineering (triple solvents of DMF, DMSO, and HI). [ 214 ] Thus, it is safe to say that various strategies proposed in this review are also applicable to the preparation of high‐quality DJ perovskite films applied as light‐absorbing materials in PSCs.…”
Section: Perspective and Conclusionmentioning
confidence: 99%
“…[ 20,26‐30,54 ] Although molecular‐chemistry‐dependent structure and optoelectronic properties of the AA′ n −1 M n X 3 n +1 type 2D perovskites have been demonstrated, unfortunately, a series of low‐ n AA′ n −1 M n X 3 n +1 perovskite devices reported currently shows poor performance. For example, solar cells achieved PCEs of 4.2%, 12.0%, 7.1%, 13.0%, 13.3%, 13.8%, 15.0%, 15.2% and 15.6% based on n ≤ 4 AA′ n −1 M n X 3 n +1 perovskites incorporating 3‐(aminomethyl)piperidinium (4AMP 2+ ), [ 27 ] 4‐(aminomethyl)piperidinium (3AMP 2+ ), [ 46 ] 1,4‐phenylenedimethanammonium (PDMA), [ 55 ] 1,3‐propanediamine (PDA), [ 20,56,57 ] trans‐1,4‐cyclohexanediamine (CHDA), [ 58 ] p‐xylylenediamine (PXD), [ 59 ] and 3‐(dimethylammonium)‐1‐propylammonium (DMAPA 2+ ). [ 60 ] In contrast to the heavily reported (A) 2 A′ n ‐1 M n X 3 n +1 and AA′ n M n X 3 n +1 perovskites, the much worse performance of the AA′ n −1 M n X 3 n +1 solar cells is caused by the lack of systematic investigations on how to control the formation and distribution of QWs.…”
Section: Introductionmentioning
confidence: 99%