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Ultrafast Response and Broad Detection Range of a Ternary Cation Perovskite Single-Crystal Thin Film Photodetector for Imaging
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2024-09-12 , DOI: 10.1021/acsami.4c07292 Chenyang Liu 1 , Feitong Chen 1 , Yingzhao Zhang 1 , Rui Wang 1 , Wenli Xu 1 , Qi Huang 1 , Qiqi Zhao 1 , Haiqing Sun 1 , Weiwei Zhang 1 , Jianxu Ding 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2024-09-12 , DOI: 10.1021/acsami.4c07292 Chenyang Liu 1 , Feitong Chen 1 , Yingzhao Zhang 1 , Rui Wang 1 , Wenli Xu 1 , Qi Huang 1 , Qiqi Zhao 1 , Haiqing Sun 1 , Weiwei Zhang 1 , Jianxu Ding 1
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FA-MA-Cs ternary cation perovskite exhibits excellent optoelectronic properties and high stabilities against humidity and light soaking and thus has aroused extensive attention in polycrystalline thin film solar cells. Compared with polycrystalline counterparts, FA-MA-Cs ternary cation perovskite single-crystal thin films (SCTFs) have lower defects, better carrier transport capacity, and stability because of lacking grain boundary defects. However, the immature growth technology of SCTFs restricts digging out its optoelectronic potential. Here, we proposed an improved space-confined method to grow large area FA0.9 MA0.05Cs0.05PbI2.7Br0.3 SCTFs using a tunable heating area to control the nucleation and growth process. Its area reaches 64 mm2 with a thickness of 26 μm. The SCTF exhibits high crystallinity, low defect density, long carrier lifetime, and high moisture resistance stability. Besides, a photosensitive chip based on a planar metal–semiconductor–metal photodetector demonstrates linear response to the three primary colors, with a photosensitive range that is 1.5 times that of protocol 3 wide color gamut. Under high-frequency light sources, the on/off ratio reaches 3.9 × 103, and the response time can be as low as 400 ns. Such ultrafast response speed and broad photosensitive range are successfully achieved for imaging applications.
中文翻译：
用于成像的三元阳离子钙钛矿单晶薄膜光电探测器的超快响应和宽检测范围
FA-MA-Cs三元阳离子钙钛矿表现出优异的光电性能以及对湿度和光浸泡的高稳定性，因此在多晶薄膜太阳能电池中引起了广泛的关注。与多晶薄膜相比，FA-MA-Cs 三元阳离子钙钛矿单晶薄膜（SCTF）由于缺乏晶界缺陷而具有较低的缺陷、更好的载流子传输能力和稳定性。然而，SCTFs的生长技术不成熟，限制了其光电潜力的挖掘。在这里，我们提出了一种改进的空间限制方法来生长大面积 FA 0.9 MA 0.05 Cs 0.05 PbI 2.7 Br 0.3 SCTF，使用可调加热区域来控制成核和生长过程。其面积达到64mm 2 ，厚度为26μm。 SCTF具有高结晶度、低缺陷密度、长载流子寿命和高耐湿稳定性。此外，基于平面金属-半导体-金属光电探测器的感光芯片对三基色表现出线性响应，感光范围是协议3宽色域的1.5倍。在高频光源下，开/关比达到3.9×10 3 ，响应时间可低至400 ns。成像应用成功实现了如此超快的响应速度和宽广的感光范围。
更新日期：2024-09-12
中文翻译：
用于成像的三元阳离子钙钛矿单晶薄膜光电探测器的超快响应和宽检测范围
FA-MA-Cs三元阳离子钙钛矿表现出优异的光电性能以及对湿度和光浸泡的高稳定性，因此在多晶薄膜太阳能电池中引起了广泛的关注。与多晶薄膜相比，FA-MA-Cs 三元阳离子钙钛矿单晶薄膜（SCTF）由于缺乏晶界缺陷而具有较低的缺陷、更好的载流子传输能力和稳定性。然而，SCTFs的生长技术不成熟，限制了其光电潜力的挖掘。在这里，我们提出了一种改进的空间限制方法来生长大面积 FA 0.9 MA 0.05 Cs 0.05 PbI 2.7 Br 0.3 SCTF，使用可调加热区域来控制成核和生长过程。其面积达到64mm 2 ，厚度为26μm。 SCTF具有高结晶度、低缺陷密度、长载流子寿命和高耐湿稳定性。此外，基于平面金属-半导体-金属光电探测器的感光芯片对三基色表现出线性响应，感光范围是协议3宽色域的1.5倍。在高频光源下，开/关比达到3.9×10 3 ，响应时间可低至400 ns。成像应用成功实现了如此超快的响应速度和宽广的感光范围。
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