Organic–inorganic perovskites have been hailed as promising candidates for optoelectronic and photovoltaic devices, but their operation remains limited to the visible spectrum. Here, we combine single-wall carbon nanotubes, PbS quantum dots and a perovskite to synthesize hybrid devices suitable for operation in both the visible and near-infrared. The photodetectors thus fabricated show responsivities as high as 0.5 A W⁻¹ and 0.35 A W⁻¹ at 500 nm and at 1300 nm, respectively, with an applied bias of 1 V. Moreover, the incorporation of nanotubes within the perovskite matrix facilitates the carrier extraction, resulting in response time under 250 μs, a gain-bandwidth product of 0.1 MHz and detectivities of 1.4 × 10¹¹ Jones and 0.9 × 10¹¹ Jones at 500 nm and at 1300 nm, respectively. This unique approach opens new pathways for the development of low-cost, high-speed and broadband perovskite-based optoelectronic devices for large-scale manufacturing.

中文翻译：

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超宽带钙钛矿-PbS量子点敏化碳纳米管光电探测器†

有机-无机钙钛矿被誉为光电子和光伏器件的有前途的候选者，但它们的操作仍然局限于可见光谱。在这里，我们将单壁碳纳米管，PbS量子点和钙钛矿相结合，以合成适用于在可见光和近红外环境中运行的混合器件。如此制造的光电探测器在500 nm和1300 nm处的响应度分别高达0.5 AW ^-1和0.35 AW ^-1，施加的偏压为1V。此外，在钙钛矿基质中掺入纳米管有助于载流子提取，导致响应时间低于250μs，增益带宽乘积为0.1 MHz，检出率为1.4×10 ¹¹ Jones和0.9×10 ¹¹琼斯分别在500 nm和1300 nm处。这种独特的方法为大规模生产基于低成本，高速和宽带钙钛矿的光电器件的开发开辟了新途径。