Wei Jie, Lei Yan, Jia Huimin, Cheng Jiamei, Hou Hongwei, Zheng Zhi
Key Laboratory for Micro-Nano Energy Storage and Conversion Materials of Henan Province, Institute of Surface Micro and Nano Materials, Xuchang University, Henan 461000, P. R. China.
Dalton Trans. 2014 Aug 7;43(29):11333-8. doi: 10.1039/c4dt00827h. Epub 2014 Jun 12.
Silver oxides (Ag2O and AgO) have attracted increasing attention as potential solar cell materials for photovoltaic devices due to their ideal bandgap and non-toxicity. In order to eliminate the complicated synthesis and harsh reaction conditions (e.g. high temperature, high vacuum, high energy input, electron beam instrumentation) required by most synthetic strategies, we developed a very facile dry chemical approach to directly prepare AgxO species on the ITO substrate by taking advantage of a UV-O3 surrounding in a controlled way. We systematically investigated the effects of relative humidity, reaction temperature, and the silver deposition technique on the formation of silver oxide (AgO or Ag2O) thin films. A possible synthetic mechanism for the formation of AgO and Ag2O is proposed. More importantly, we have designed and successfully fabricated novel inorganic hybrid Ag2O/Bi2O3 heterojunction thin films for the first time which exhibit significantly improved photocurrent compared with pure Bi2O3 films.
氧化银（Ag2O和AgO）因其理想的带隙和无毒特性，作为光伏器件潜在的太阳能电池材料受到了越来越多的关注。为了消除大多数合成策略所需的复杂合成过程和苛刻反应条件（如高温、高真空、高能量输入、电子束仪器），我们开发了一种非常简便的干化学方法，通过以可控方式利用紫外 - O3环境，直接在ITO衬底上制备AgxO物种。我们系统地研究了相对湿度、反应温度和银沉积技术对氧化银（AgO或Ag2O）薄膜形成的影响。提出了一种可能的AgO和Ag2O形成的合成机制。更重要的是，我们首次设计并成功制备了新型无机杂化Ag2O/Bi2O3异质结薄膜，与纯Bi2O3薄膜相比，其光电流显著提高。
