The article studies China＇s development assistance policy during the last decades. It shows the evolution of Chinese approach to providing foreign aid. The analysis is based on White Papers on China＇s Foreign Aid fr...The article studies China＇s development assistance policy during the last decades. It shows the evolution of Chinese approach to providing foreign aid. The analysis is based on White Papers on China＇s Foreign Aid from 2011 and 2014, theoretical studies, and reports on China＇s foreign aid. From the beginning of the 21st century, China has become one of the most important emerging donors. Chinese aid is primarily provided to Africa, Latin America, Asia, and the Pacific. Depending on the region, the assistance is directed to large-scale infrastructure projects, energy facilities, or natural resource development activities. The aid is combined with investments and trade arrangements. Generally, China＇s aid programme is driven by economic, diplomatic, and strategic objectives. The rules according to which Chinese assistance is provided to developing countries differ significantly from the rules established by Development Assistance Committee （DAC） members. Aid-receiving countries do not have to fulfil strict development assistance regimes and adopt specific economic policies and targets.展开更多
Suitable electron transport layers are essential for high performance planar perovskite heterojunction solar cells. Here, we use ZnO electron transport layer sputtered under oxygen-rich atmosphere at room temperature ...Suitable electron transport layers are essential for high performance planar perovskite heterojunction solar cells. Here, we use ZnO electron transport layer sputtered under oxygen-rich atmosphere at room temperature to decrease the hydroxide and then suppress decomposition of perovskite films. The perovskite films with improved crystallinity and morphology are achieved. Besides, on the ZnO substrate fabricated at oxygen-rich atmosphere, open-circuit voltage of the CH_3NH_3PbI_3-based perovskite solar cells increased by 0.13 V.A high open-circuit voltage of 1.16 V provides a good prospect for the perovskite-based tandem solar cells. The ZnO sputtered at room temperature can be easily fabricated industrially on a large scale, therefore, compatible to flexible and tandem devices. Those properties make the sputtered ZnO films promising as electron transport materials for perovskite solar cells.展开更多
文摘The article studies China＇s development assistance policy during the last decades. It shows the evolution of Chinese approach to providing foreign aid. The analysis is based on White Papers on China＇s Foreign Aid from 2011 and 2014, theoretical studies, and reports on China＇s foreign aid. From the beginning of the 21st century, China has become one of the most important emerging donors. Chinese aid is primarily provided to Africa, Latin America, Asia, and the Pacific. Depending on the region, the assistance is directed to large-scale infrastructure projects, energy facilities, or natural resource development activities. The aid is combined with investments and trade arrangements. Generally, China＇s aid programme is driven by economic, diplomatic, and strategic objectives. The rules according to which Chinese assistance is provided to developing countries differ significantly from the rules established by Development Assistance Committee （DAC） members. Aid-receiving countries do not have to fulfil strict development assistance regimes and adopt specific economic policies and targets.
基金supported by the International Cooperation Projects of the Ministry of Science and Technology (2014DFE60170)the National Natural Science Foundation of China (61474065 and 61674084)+2 种基金Tianjin Research Key Program of Application Foundation and Advanced Technology (15JCZDJC31300)the Key Project in the Science & Technology Pillar Program of Jiangsu Province (BE2014147-3)the 111 Project (B16027)
文摘Suitable electron transport layers are essential for high performance planar perovskite heterojunction solar cells. Here, we use ZnO electron transport layer sputtered under oxygen-rich atmosphere at room temperature to decrease the hydroxide and then suppress decomposition of perovskite films. The perovskite films with improved crystallinity and morphology are achieved. Besides, on the ZnO substrate fabricated at oxygen-rich atmosphere, open-circuit voltage of the CH_3NH_3PbI_3-based perovskite solar cells increased by 0.13 V.A high open-circuit voltage of 1.16 V provides a good prospect for the perovskite-based tandem solar cells. The ZnO sputtered at room temperature can be easily fabricated industrially on a large scale, therefore, compatible to flexible and tandem devices. Those properties make the sputtered ZnO films promising as electron transport materials for perovskite solar cells.
