The PCE of PSCs now rivals that of Si photovoltaics (PV), and thus device stability is of utmost importance. The stability of PSCs depends on many factors (ageing condition, perovskite composition, CTLs, electrodes, encapsulation and passivation) and is thus a complex issue.
Strikingly, there happened no degradation in the devices operated at biases slightly lower than MPP, indicating that the sufficient extraction of photocurrent helped to boost operational stability. a) A schematic diagram of the electronic band structure of a perovskite solar cell depending on the applied voltage.
As a result, thermal stability of perovskite solar cells has been greatly improved to a few thousand hours of T 85 (at 85°C and 50% relative humidity).
The three International Summits on Organic Photovoltaic Stability (ISOS) held since 2008 resulted in some general measurement practices for OPVs that we summarize below. 3. Stability measurement protocols There are different categories of test protocols: dark, outdoor, simulated light & stress testing and thermal cycling.
Stability is a major concern in the PSCs research field. The cells which gave high performance closer to crystalline-silicon solar cells i.e. around 20%, were degraded rather quickly. In order to compete with other photovoltaic technologies, PSCs must demonstrate long term stability.
The cells which gave high performance closer to crystalline-silicon solar cells i.e. around 20%, were degraded rather quickly. In order to compete with other photovoltaic technologies, PSCs must demonstrate long term stability. A sizeable number of stability studies have been performed and reported in the literature.