Amazing pictures Quantum Dot Solar Cells

Amazing pictures Quantum Dot  Solar Cells.

A University of Toronto team led by Professor Ted Sargent has reported the development of the first two-layer quantum dot solar cell, that can be a game changer in the field of solar energy. The team has used two different specification of colloidal quantum dots ( CQS) , one tuned to absorb the visible part of the solar energy, and the other to absorb the infrared and near-infrared part of it, increasing the theoretical junction efficiency from 31 percent to 42 percent.

The conventional bulk silicon solar cells can only absorb energy from the visible spectrum of sunlight. The rest of the energy is passed through unabsorbed on poorly absorbed.The PbS ( Lead Sulfide) colloidal quantum dots, used by the Toronto team, have the advantage of being capable of being tuned to absorb different parts of the solar spectrum.
Combining two layers into a “tandem junction” has been attempted earlier too, but the problem had always been the resistance at the junction that led to losses. The Toronto team has come up with a solution to this problem by using a combination of four metal oxides in a cascaded transition layer that has kept the resistance “nice and low” as Prof Sargent puts it. The team has also chosen transparent oxides to permit the sunlight to pass through the lower layer.
The team is reported to have applied the CQS in layers on a Tin Oxide coated glass plate in ambient air and temperature conditions. Since the process does not need specialised equipment, it could eventually be as easy to apply as spraying on. The technology also permits increasing the number of layers to 3 or 4 that could push the theoretical junction efficiency as high as 84 percent.
While the theoretical junction efficiency has been increased to 42 percent, the Toronto team’s first two layer cell has an efficiency of only a tenth of that at 4.2 percent. The Toronto team is confident that in the next 5 years, this efficiency will be increased to 10 percent. The lower efficiency of quantum dot cells will be offset by their lower costs both in manufacture and application.

Amazing Pictures Fantasy Garden Get Lost in it beautiful works

Bruno Torf is an artist that creates beautiful works of fantasy art in his sculpture garden. This garden resides in Marysville, Victoria hidden away in a magical rainforest setting.

Originally from South America, Bruno moved his family to Marysville in 1995. He originally started his career as a sign writer, but gradually made the transition to being a fulltime artist. He wanted a place to exhibit his artwork, so he opened Bruno's Art and Sculpture Garden.

He travels around the world quite frequently, studying different styles of art. This is definitely apparent in his garden sculptures. He decided to create the sculpture garden so that he could run it as a permanent attraction. The garden began with a little over 15 life-size terracotta sculptures and now has over 115 on display. Combined with his oil paintings, sketches and small sculptures, there are now over 300 works of art on display at Bruno's Art and Sculpture Garden.











I would love to go to this garden to see these sculptures. It reminds me of a Lord of the Rings type setting. Now that I think about it....I don't want to just visit, I'd totally live in a place like this. Imagine waking up in this fantasy world every day. But then I'd be on display for all of the tourists....they would probably think I was a scary gnome when they see what I look like waking up in the morning.

The Longest Truck in the 182ft Road World Amazing Pictures

The longest truck in the world

So, have you ever this truck? May you ever seen the truck below

Longest truck in the world - Hart hitches a ride in a 182ft Road Train

“Some drivers just won’t pass us, they are too scared”

The World's Amazing Largest Comic Strip Unveiled Video

A giant reproduction of a page from a Tintin adventure has been unveiled as the world's largest comic strip.Measuring 672sqm the classic Hergé image has gone on show in Brussels Grand Place as part of a comic festival.

It shows a scene from the book 'The Adventures of Tintin: Destination Moon' is a whopping 30,000 times the normal size of a page.

The image also weighs around 350kg... as a result no-one has been able to turn the page over and see how it ends.

Organisers say they image was selected because of the obvious Brussels connection and it was 40 years since Neil Armstrong became the first man to set foot on the moon.

Source: newslite.tv

Amazing Airplane Photos Of Shuttle Discovery Returning Home

Amazing Photos Of Shuttle Discovery Returning Home (Bit Old)