Zhou Huawei, Cui Xiaolei, Yuan Cang, Cui Jiawen, Shi Shaozhen, He Guohang, Wang Yunying, Wei Jiazhen, Pu Xipeng, Li Wenzhi, Zhang Dafeng, Wang Jie, Ren Xiaozhen, Ma Huiyan, Shao Xin, Wei Xinting, Zhao Jinsheng, Zhang Xianxi, Yin Jie
School of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng 252059, China.
ACS Omega. 2018 Oct 24;3(10):13960-13966. doi: 10.1021/acsomega.8b02012. eCollection 2018 Oct 31.
Organic-inorganic hybrid material is a recent hot topic in the scientific community. The best band gap for the entire solar absorption spectrum is about 1.1 eV. However, the lead perovskite band gap is about 1.5 eV. Therefore, developing organic-inorganic hybrid material toward the broader light harvesting of the solar spectrum is extremely urgent. In this study, we prepare three kinds of organic-inorganic hybrid palladium perovskite materials, including (CHNH)PdCl, (CHNH)PdCl Br , and CHNHPdI, for an optoelectronic response. The absorption cut offs of (CHNH)PdCl, (CHNH)PdCl Br , and CHNHPdI are approximately 600, 700, and 1000 nm, respectively. The band gaps of (CHNH)PdCl, (CHNH)PdCl Br , and CHNHPdI are determined to be approximately 2.15, 1.87, and 1.25 eV, respectively. To the best of our knowledge, this is the first study that discusses adsorption properties and photoelectric behavior of organic-inorganic hybrid palladium perovskite materials. Interestingly, the photoelectric response of the devices based on CHNHPdI reaches 950 nm. The results will attract attention in the fields of optical recorders, optical memory, security, light capture, and light treatment.
有机-无机杂化材料是科学界近期的一个热门话题。整个太阳能吸收光谱的最佳带隙约为1.1电子伏特。然而，铅基钙钛矿的带隙约为1.5电子伏特。因此，朝着更广泛地捕获太阳光谱来开发有机-无机杂化材料极为紧迫。在本研究中，我们制备了三种有机-无机杂化钯基钙钛矿材料，包括(CHNH)PdCl、(CHNH)PdCl Br 以及CHNHPdI，用于光电响应。(CHNH)PdCl、(CHNH)PdCl Br 以及CHNHPdI的吸收截止波长分别约为600、700和1000纳米。(CHNH)PdCl、(CHNH)PdCl Br 以及CHNHPdI的带隙分别确定为约2.15、1.87和1.25电子伏特。据我们所知，这是第一项讨论有机-无机杂化钯基钙钛矿材料吸附特性和光电行为的研究。有趣的是，基于CHNHPdI的器件的光电响应达到950纳米。这些结果将在光学记录器、光学存储器、安全、光捕获和光治疗等领域引起关注。
