Traditionally, III–V multi-junction cells have been used in concentrator photovoltaic (CPV) applications, which deliver extremely high efficiencies but have failed to compete with ‘flat-plate’ silicon technologies owing to cost. Here, we assess the feasibility of using metal halide perovskites for CPVs, and we evaluate their device performance and stability under concentrated light. Under simulated sunlight, we achieve a peak efficiency of 23.6% under 14 Suns (that is, 14 times the standard solar irradiance), as compared to 21.1% under 1 Sun, and measure 1.26 V open-circuit voltage under 53 Suns, for a material with a bandgap of 1.63 eV. Importantly, our encapsulated devices maintain over 90% of their original efficiency after 150 h aging under 10 Suns at maximum power point. Our work reveals the potential of perovskite CPVs, and may lead to new PV deployment strategies combining perovskites with low-concentration factor and lower-accuracy solar tracking systems.

传统上，III-V多结电池已用于聚光光伏（CPV）应用中，该应用具有极高的效率，但由于成本原因无法与“平板”硅技术竞争。在这里，我们评估了将金属卤化物钙钛矿用于CPV的可行性，并评估了它们在聚光条件下的器件性能和稳定性。在模拟阳光下，我们在14个太阳下达到23.6％的峰值效率（即标准太阳辐照度的14倍），而在1个太阳下达到21.1％的峰值效率，并且在53个太阳下测量1.26 V开路电压。带隙为1.63 eV的材料。重要的是，我们的封装设备在10 Sun的最大功率点下老化150小时后，仍可保持其原始效率的90％以上。我们的工作揭示了钙钛矿CPV的潜力，