Technology and R&D

China continued to take center stage in Q3 2018; however the focus shifted from its now notorious policy change. In both positive and negative news, Europe announced the end of the MIP, at almost the same time as the United States slapped tariffs on Chinese imports of inverters, AC modules and non-lithium batteries. Yin yang. Ping pong.

While China’s PV policy announcement dominated the headlines in Q2 2018, there were a lot of other significant happenings in the world of solar, not least the EU’s 32% renewable energy targets, rumors of U.S. tariffs on inverters, PV records in Germany, and unexpected new partnerships. Read on to discover the highlights from April to June.

Whether caused by improper production processes, poor treatment in transport and installation, climate conditions or any other issue, performance reducing microcracks are a major source of stress for PV developers and project owners. Now, an EU funded research project has found that a different type of stress could provide a solution, and even “heal” some existing cracks.

Dire warnings about the state of our planet characterized 2018, with a plethora of reports released calling for climate action. The solar PV, and storage, industries have a leading role to play in the required energy transition: this bold quest was taken on by many over the last year, with technological progress and expansion seen upstream and downstream, and in policy, globally. Like last year, China took all by surprise, this time, however, in the form of its abrupt 31/5 policy change, the effects of which are still being felt in almost every corner of every market. And of course, Tesla grabbed the headlines – also for rather more unsavory reasons than in 2017. In this first out of a total of four posts pv magazine reflects on Q1.

UK headquartered Oxford PV has set a new world efficiency record for its perovskite/silicon tandem solar cells.

A team of scientists at University of California, Riverside investigating the ‘unusual’ electronic behavior of pristine graphene has found that, in certain configurations, the material can generate a current without the need for a p-n junction, leading to the possibility of extremely thin, lightweight solar devices.

Alta Devices’ gallium arsenide solar research cells have been certified with a 29.1% efficiency, setting a new single junction solar cell efficiency record. The most significant change, however, isn’t actually the efficiency; it is that the weight fell 30%, and from the words of Alta Devices, its process has lowered material costs to “essentially nothing”.

Photovoltaic manufacturers in Asia are importing deposition reactors from the EU to test the latest word in silicon solar cell passivation. Two thin buffer layers sandwiched between silicon wafers and metal contacts are increasing the efficiency of conventional solar cells and setting new records. Equipment suppliers expect the technology to spread through the industry and boost their bottom line.

NREL has proposed a new methodology for determining solar module degradation rates, taking into account measurement challenges such as sensor drift, inverter nuances, soiling and others – keeping the focus on the solar modules themselves.

Hydrogen holds promise for harnessing renewables to produce clean fuel for transport, growing a green energy-export industry, and overcoming seasonal intermittency challenges in the grid. On the road to viable hydrogen production every cost-efficiency measure counts.