Phenethylammonium iodide modulated SnO2 electron selective layer for high performance, self-powered metal halide perovskite photodetector

Multifunctional Regioisomeric Passivation Strategy for Fabricating Self-Driving, High Detectivity All-Inorganic Perovskite Photodetectors

“…Therein, i n is derived from a fast Fourier transform of the acquired dark current as a function of time at 0 V, as illustrated in Figure S21. In the frequency range below 250 Hz, the i n – f curve for PDs is primarily dominated by flicker noise (1/ f noise) . Above 250 Hz, the i n values remain constant and show little frequency dependence, as for the 14-FABA-modified PDs, the constant i n value is ∼2.05 × 10 –12 A/Hz 1/2 .…”

“…The tests on the noise current spectrum of perovskite devices modified with 14-FABA were also conducted to further confirm the validity of the D *. According to the work of Wang et al, the D * values can be obtained by following the formula: D * = R A B i n , where A , B , and i n are the effective photoactive area, bandwidth, and i n , respectively. Therein, i n is derived from a fast Fourier transform of the acquired dark current as a function of time at 0 V, as illustrated in Figure S21.…”

“…In the frequency range below 250 Hz, the i n −f curve for PDs is primarily dominated by flicker noise (1/f noise). 45 Above 250 Hz, the i n values remain constant and show little frequency dependence, as for the 14-FABA-modified PDs, the constant i n value is ∼2.05 × 10 −12 A/Hz 1/2 . The maximum D* for 14-FABA-treated PDs is about 1.85 × 10 13 Jones at the wavelength of 580 nm and 0 V bias, and it is approximate to the calculated result from the dark current further indicating the reliability of D*.…”

“…The tests on the noise current spectrum of perovskite devices modified with 14-FABA were also conducted to further confirm the validity of the D*. According to the work of Wang et al, 45 the D* values can be obtained by following the formula:…”

Remarkable Enhancement of Detectivity and Stability in Flexible n–i–p-Type Perovskite Photodetectors by Concurrent Use of Various Two-Dimensional Materials: Doped Graphene, Graphene Quantum Dots, WS2, and h-BN

“…This D * value is larger than or comparable to those of previously reported self-powered n–i–p-type perovskite-based PDs (Table ). ,,,− …”