EN02.12.18 : Charge Carrier Transport Analysis of Mixed-Halide Perovskite Using Lateral Photovoltaic Devices

5:00 PM–7:00 PM Apr 5, 2018 (America - Denver)

PCC North, 300 Level, Exhibit Hall C-E

Seok Joo Yang1 Duckhyun Ju1 Kilwon Cho1

1, POSTECH, Pohang, , Korea (the Republic of)

Mixed-halide perovskites, CH3NH3PbI3−xClx, enabled fabrication of highly efficient perovskite solar cells (PeSCs). Chloride ions make the morphology, carrier diffusion length, and stability of perovskite films better. However, the reported device performances of mixed-halide PeSCs have showed non-significant difference of efficiencies with those of the triiodide perovskite, CH3NH3PbI3, devices. This makes uncertainty for the benefits from the presence of Cl ions in the mixed-halide perovskite films. To be clear an effect of Cl- inclusions on optoelectronic properties of perovskite devices, suitable device structure and spectroscopic analysis should be introduced. In this work, we fabricated lateral-structured perovskite device to study electrical properties of perovskite devices, which showed a clear contrast of photoelectric property between mixed-halide and triiodide perovskites and furthermore provided a suitable device for spectroscopic measurements on actual device architecture.