TY - JOUR
T1 - Electrolyte-Gated Perovskite Transistors Functionalized with Conjugated Polymers
AU - Nketia-Yawson, Vivian
AU - Nketia-Yawson, Benjamin
AU - Opoku, Henry
AU - Lee, Ji Hyeon
AU - Jo, Jea Woong
N1 - Publisher Copyright:
© 2023 American Chemical Society.
PY - 2023/2/6
Y1 - 2023/2/6
N2 - In emerging perovskite transistors, interfacial engineering is pivotal for modulating the effective charge carrier transport; however, the gate dielectric layer and its interface remain unexplored owing to the limited chemical stability of perovskites. Here, we propose an interfacial functionalization with a conjugated polymer to allow the use of a high capacitance electrolyte dielectric in top-gate perovskite transistors. This multifunctional approach, exploiting orthogonal solution-processed polymers, enables blocking of chemical diffusion during the deposition of the dielectric, allows passivation of defects on the perovskite surface, results in air stability enhancement, and boosts mobility via the formation perovskite-polymer hybrid channels. The optimized conjugated polymer-capped lead iodide perovskite transistors showed a remarkable hole mobility of over 30 cm2 V-1 s-1 at ≤2 V. This result demonstrated the possibility of realizing high mobility through interfacial functionalization of perovskites in transistor applications.
AB - In emerging perovskite transistors, interfacial engineering is pivotal for modulating the effective charge carrier transport; however, the gate dielectric layer and its interface remain unexplored owing to the limited chemical stability of perovskites. Here, we propose an interfacial functionalization with a conjugated polymer to allow the use of a high capacitance electrolyte dielectric in top-gate perovskite transistors. This multifunctional approach, exploiting orthogonal solution-processed polymers, enables blocking of chemical diffusion during the deposition of the dielectric, allows passivation of defects on the perovskite surface, results in air stability enhancement, and boosts mobility via the formation perovskite-polymer hybrid channels. The optimized conjugated polymer-capped lead iodide perovskite transistors showed a remarkable hole mobility of over 30 cm2 V-1 s-1 at ≤2 V. This result demonstrated the possibility of realizing high mobility through interfacial functionalization of perovskites in transistor applications.
UR - http://www.scopus.com/inward/record.url?scp=85146155528&partnerID=8YFLogxK
U2 - 10.1021/acsmaterialslett.2c01039
DO - 10.1021/acsmaterialslett.2c01039
M3 - Article
AN - SCOPUS:85146155528
SN - 2639-4979
VL - 5
SP - 388
EP - 396
JO - ACS Materials Letters
JF - ACS Materials Letters
IS - 2
ER -