pnp-switchable Materials as Diodes and Transistors (pnp-mat)

该项目涉及首次实现和制造单分量二极管和单分量晶体管，计划在以后用于光、气和水分离应用。我们打算合成和使用可PNP开关的半导体，如Ag18Cu3Te11Cl3和AgCuS，它们在这一点上表现出可逆的结构相变和独特的PNP开关的半导体机制。该项目的目标是利用这种效应来创造第一个和以前看不到的单分量二极管和单分量晶体管，它们不是由两个独立的p和n型掺杂半导体组成，而是通过在单一材料中进行简单的热激活而产生的。通过对块体和纳米材料的U/I测量，我们打算确定二极管和晶体管的物理性质、pn转变动力学和电学参数。除了已知的相之外，我们还将寻找新的PNP可切换材料，并打算通过阳离子和阴离子的取代来优化上述材料。选定的化合物将被测试其在气体和光传感应用以及水分解方面的潜力。因此，我们将在施加气体或光的情况下测量U/I特性，或者在切换时测试这些材料作为裂水催化剂。尤其是Ag18Cu3Te11Cl3，其室温下的PNP开关具有极大的潜力，可应用于各种领域。最近，我们证实并发表了Ag18Cu3Te11Cl3的二极管行为。该项目是由两个具有化学材料合成、纳米化学和晶体物理能力的小组密切合作计划的。在该项目结束后，单分量二极管和晶体管可能成为IT技术中的新参与者，作为传感器，或在多种催化应用中。

This projects deals with the first realization and fabrication of one-component diodes and one-component transistors which are planned to be utilized in light, gas and water splitting applications afterwards. We intend to synthesise and use pnp-switchable semiconductors like Ag18Cu3Te11Cl3 und AgCuS which show a reversible structural phase transition and an unique pnp switch of their semiconductor mechanism at this point. Goal of this project is to utilize this effect to create the first and former unseen one-component diode and one-component transistor which do not consist of two independent p- and n-type doped semiconductors, but which are generated by a simple thermal activation in a single material instead. Using U/I measurements on bulk and nano-materials we intend to determine the physical properties, the pn-transition kinetics and the electrical parameters of the diodes and transistors. Beside the known phases we will seek for new pnp-switchable materials and we intend to optimize the afore mentioned ones by substitution of cations and anions. Selected compounds will be tested for their potential in gas and light sensing applications and for water splitting. Here fore, we will measure the U/I characteristics upon application of gas or light or we test these materials as water splitting catalyst upon switching. Especially Ag18Cu3Te11Cl3 has an extraordinary potential with its pnp-switch at room temperature to be used in various applications. Recently, we were able to substantiate and publish the diode behaviour of Ag18Cu3Te11Cl3. The project is planned in close collaboration between two groups with competences in chemical material synthesis, nano chemistry, and crystal physics. After the termination of the project one-component diodes and transistors may be new players in IT technology, as sensors, or in manifold catalytic applications.