Lateral‐Structure Single‐Crystal Hybrid Perovskite Solar Cells via Piezoelectric Poling

Abstract

Single-crystal perovskite solar cells with a lateral structure yield an efficiency enhancement 44-fold that of polycrystalline thin films, due to the much longer carrier diffusion length. A piezoelectric effect observed in perovskite single-crystal and the strain-generated grain-boundaries enable ion migration to form a p-i-n structure.

Wafer-scale single-crystal perovskite patterned thin films based on geometrically-confined lateral crystal growth

“…4c). Poling was carried out before the power conversion efficiency (PCE) measurement to form p-i-n structure in the perovskite3940. During the poling procedure, the external potential field by DC power supplier is applied to the perovskite solar cell devices so as to induce the ion migration inside of the perovskite and thereby to derive the p-i-n structure of the perovskite layer.…”

“…for 60 s using a precursor solution with a concentration of 40 wt%. Electrical poling was applied to the devices at an electric field of 0.39 V μm −1 for 60 s to induce a p-i-n junction3940. The gap-type devices and solar cells were measured using a semiconductor parameter analyser (HP 4156C, Agilent Technologies) in ambient air conditions.…”

Progress in organic-inorganic hybrid halide perovskite single crystal: growth techniques and applications

“…With the millimeter sized bulk single crystal, it's hard to make a high efficiency solar cell. However, Dong et al [85] fabricated lateral structure perovskite single crystal solar cells via piezoelectric poling. A highest PCE of 5.36% can be reached at 170 K which yields an efficiency enhancement of 44 folds of the polycrystalline film.…”

Metal Halide Perovskite Single Crystals: From Growth Process to Application

“…These significant works made clear that the optoelectronic properties of monocrystalline-film-based devices are superior to their polycrystalline counterparts. Interestingly, based on the bulk single crystal, Huang's group fabricated a lateral-structured device with a maximum PCE of 5.36% at 170 K and a comparable J SC to the best thin-film solar cells [106]. …”

“…These significant works made clear that the optoelectronic properties of monocrystalline-film-based devices are superior to their polycrystalline counterparts. Interestingly, based on the bulk single crystal, Huang's group fabricated a lateral-structured device with a maximum PCE of 5.36% at 170 K and a comparable JSC to the best thin-film solar cells [106]. Photodetectors are another device for realizing photoelectric conversion, and have attracted much attention because of their extensive applications, which include biological sensing, camera imaging, missile warning, and communication [107][108][109][110].…”