TY - JOUR
T1 - Additive Engineering of Ruddlesden-Popper Perovskites with MXene Nanoflakes
T2 - Toward Enhanced Photoresponsivity, Detectivity, and Stability
AU - Ansari, Rashid M.
AU - Yadav, Abhishek
AU - Singh, Sarvar
AU - Irziqat, Bahaaeddin
AU - Aivalioti, Chrysa
AU - Zhou, Renqian
AU - Abulikemu, Mutalifu
AU - Azam, Ameer
AU - Fatayer, Shadi
AU - Ahmad, Shahab
N1 - Publisher Copyright:
© 2025 American Chemical Society.
PY - 2025
Y1 - 2025
N2 - Ruddlesden-Popper perovskites (RPPs) have drawn a lot of attention due to their structural stability under ambient atmosphere compared to bulk counterparts. However, their relatively low photoresponsivity, due to quantum and dielectric confinement effects, is still a key challenge in the development of efficient photodetectors. Present work reports one-step additive engineering of the RPP ((CH)2(MA)n−1PbnBr3n+1, n = 4) absorber layer using Ti3C2Tx MXene nanoflakes, which formed a robust heterointerface. Surface functional groups of MXene retard the crystallization rate of RPP thin films, thereby spurring the enhancement of the optical, structural, and morphological properties of RPP-MXene hybrids. Unencapsulated hybrid (n = 4 + 1.5 mM) photodetectors have shown improved responsivity (∼151 A/W) and detectivity (∼14.21 × 1012 Hz1/2/W) at 2.0 V bias under laser illumination (λex ∼ 405 nm, Pin ∼ 0.62 mW/cm2), outperforming pristine devices significantly. Over 50 cycles, hybrid devices maintained stable peak photocurrent, while photocurrent of pristine devices degraded by ∼35%, indicating a unique platform to explore a wide range of MXenes to overcome the stability issues associated with perovskites.
AB - Ruddlesden-Popper perovskites (RPPs) have drawn a lot of attention due to their structural stability under ambient atmosphere compared to bulk counterparts. However, their relatively low photoresponsivity, due to quantum and dielectric confinement effects, is still a key challenge in the development of efficient photodetectors. Present work reports one-step additive engineering of the RPP ((CH)2(MA)n−1PbnBr3n+1, n = 4) absorber layer using Ti3C2Tx MXene nanoflakes, which formed a robust heterointerface. Surface functional groups of MXene retard the crystallization rate of RPP thin films, thereby spurring the enhancement of the optical, structural, and morphological properties of RPP-MXene hybrids. Unencapsulated hybrid (n = 4 + 1.5 mM) photodetectors have shown improved responsivity (∼151 A/W) and detectivity (∼14.21 × 1012 Hz1/2/W) at 2.0 V bias under laser illumination (λex ∼ 405 nm, Pin ∼ 0.62 mW/cm2), outperforming pristine devices significantly. Over 50 cycles, hybrid devices maintained stable peak photocurrent, while photocurrent of pristine devices degraded by ∼35%, indicating a unique platform to explore a wide range of MXenes to overcome the stability issues associated with perovskites.
UR - http://www.scopus.com/inward/record.url?scp=105004580367&partnerID=8YFLogxK
U2 - 10.1021/acsmaterialslett.4c02691
DO - 10.1021/acsmaterialslett.4c02691
M3 - Article
AN - SCOPUS:105004580367
SN - 2639-4979
SP - 2115
EP - 2124
JO - ACS Materials Letters
JF - ACS Materials Letters
ER -