Cation-Exchanged Quasi-2D Perovskite Layer

Near-Order Trap Reduction

A conformal quasi-2D perovskite passivation layer formed via cation exchange on 3D perovskites, markedly reducing interfacial defects and suppressing dark current.

Liu, Zhiqiang · Pang, Jincong · Xiao, Biao · Liu, Jiyan · Liu, Xueqing · Li, Kanghua · Zheng, Zhiping · Xu, Ling · Niu, Guangda · Tang, Jiang

ACS Applied Materials & Interfaces 2025

Specifications

探测器灵敏度

{'zh': '59,040', 'en': ''} μC Gy

最低检测限

{'zh': '18.6', 'en': ''} nGy

空间分辨率

{'zh': '0.71', 'en': ''} lp/pixel

剂量

{'zh': '29.9', 'en': ''} μGy

Advantages

Surface trap density reduced by nearly an order of magnitude

Noise current density 6 × 10⁻¹⁴ A Hz⁻¹/²