Fig. 2: Opto-electronic changes in lead-tin perovskite films during encapsulated aging under 65 °C and simulated full-spectrum sunlight (76 mW cm−2) irradiance. | Nature Communications

Fig. 2: Opto-electronic changes in lead-tin perovskite films during encapsulated aging under 65 °C and simulated full-spectrum sunlight (76 mW cm−2) irradiance.

From: Disentangling degradation pathways of narrow bandgap lead-tin perovskite material and photovoltaic devices

Fig. 2

a Background hole density extracted from TPC measurements of lead-tin perovskite films deposited on glass. b Dark conductance measured laterally across 300 or 500 μm channels on lead-tin perovskite films, deposited on glass or thin layers of PEDOT:PSS or PTAA. For both (a) and (b), (n = 4 for batch 1, n = 2 for EDAI2 passivated, n = 3 for batch 2, n = 4 for perovskite on HTL samples). c Intensity-dependent PLQE of lead-tin perovskite films deposited on glass (batch 1 in a, b), d glass/PEDOT:PSS or e glass/PTAA. Measurements for films on glass were only carried out until 150 h of aging.

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