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我国研究团队成功制备大面积铜锌锡硫硒薄膜光伏组件_我的网站
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As night falls over Southwest China's Chongqing Municipality, motorcycles begin to weave along Nanbin Road, with riders posing against the glittering skyline across the Yangtze River. Within seconds, the moving camera captures bridges, high-rises and riverside lights - creating a signature travel moment that has become known online as the "Chongqing Landing Visa."
The trend has now spread beyond Chinese social media. On Monday, French rider Valentin Debise, who competes in the World Supersport Championship on a Chinese-brand ZXMOTO, posted a video thanking Zhang Xue for taking him to experience the "Chongqing Landing Visa."
The "Chongqing Landing Visa" is not an actual visa, but a humorous nickname coined by netizens for a popular motorcycle photo-op in Chongqing. Visitors ride or pose with motorcycles at designated spots along Nanbin Road, using Chongqing's dazzling nighttime skyline as a backdrop, while performing a series of signature poses, such as stretching out their arms, making a heart gesture or being lifted into the air, to capture their own video of the mountain city.
The motorcycle photo-op, a playful trend created by Chinese netizens, has rapidly gained popularity this year, with related videos garnering more than 1.52 billion views. An increasing number of celebrities, influencers and foreign tourists have joined in.
"People like the 'Landing Visa' not simply because motorcycles are cool, but because it combines some of the most distinctive elements of Chongqing into a single frame - the mountains, the river, the night skyline and the city's sense of speed," Chongqing-based motorcycle blogger Yu Tiancheng told the Global Times. "Visitors don't need to understand any complicated cultural background. They just get on a motorcycle, set off, and can start enjoying the city within seconds."
"For first-time visitors to Chongqing, motorcycles offer a very direct way in," Yu noted. "You're not just standing there looking at Chongqing. You're actually riding into its nighttime scenery."
The appeal of the "Chongqing Landing Visa" is not limited to professional riders or social media influencers. Young travelers from overseas are also discovering Chongqing through its everyday urban life.
A lively city
Kim Yeon, a graduate student from South Korea, visited Chongqing during her summer vacation in August. She told the Global Times that she had watched numerous "cyberpunk" videos of Chongqing on social media before her trip, but what surprised her most after arriving was the city's vibrant nightlife.
"Even late at night, there are still so many people on the streets, and restaurants, shops and small street-side businesses remain lively. For young travelers, that atmosphere itself is part of the travel experience," she said.
She was particularly struck by how Chongqing's nightlife is woven into everyday life rather than concentrated around a single tourist attraction. "You can have something to eat at night, walk around, go to the riverside to see the night view. A lot of activities can continue well into the night," she said.
This nighttime energy also provides a natural setting for the "Chongqing Landing Visa."
After spending the day exploring the city, visitors can continue discovering Chongqing after dark through motorcycle rides, nighttime tours and street-level experiences.
The motorcycle photo-op is therefore more than a photo opportunity; it has become part of the way young travelers experience the city at night.
That helps explain why Chongqing is attracting more young visitors from overseas. In the first half of this year, Chongqing Jiangbei International Airport handled more than 1.48 million inbound and outbound passengers at its immigration checkpoint, up 39.5 percent year-on-year, the fastest growth among China's 10 largest airports, according to Chongqing municipal people's government.
Nearly 70,000 foreign travelers entered Chongqing in July alone, up 84.7 percent year-on-year, according to Chongqing city government.
More than a destination
As more overseas visitors come to see Chongqing as a city they can enjoy and experience well into the night, motorcycles, night views and street life are becoming more than just backdrops - they are becoming experiences that travelers actively take part in.
Yang Gen, from the Chongqing Municipal Development and Reform Commission, told the Global Times that Chongqing's unique landscape and urban development have created a naturally three-dimensional cityscape. "Many places here are themselves scenes that people can experience and capture on camera," he said.
In his view, what makes the "Chongqing Landing Visa" interesting is that it was not a tourism project designed by the city in advance. Instead, visitors discovered a location and created a new way to experience it themselves.
"After people filmed and shared their experiences, more visitors were drawn to the same places, creating a natural chain of communication and influence," Yang said.
"This kind of approach, in which visitors participate in creating content and then attract more visitors through that content, is something traditional tourism promotion can hardly fully replicate," he noted.
Behind this new form of communication is also a shift in the travel preferences of younger tourists.
According to Yang, the ability to participate, experience and create personal memories is becoming an increasingly important factor when young travelers choose destinations.
The rise of the "Chongqing Landing Visa" also shows how locally created travel experiences can spread beyond borders through social media. As more international visitors share their China travel experiences online, China is attracting growing attention overseas.
Tesla CEO Elon Musk recently posted on X that "more people should visit China," while his mother Maye Musk has repeatedly shared her positive experiences of traveling in China.
The story of Chongqing offers a glimpse into this growing interest. The motorcycle trend is more than a viral moment; it shows how Chinese cities are attracting visitors not only through landmarks, but also through unique everyday experiences.
。 记者从中国科学院物理研究所获悉，该所孟庆波研究员团队成功制备出大面积铜锌锡硫硒薄膜光伏组件，组件光电转换效率达到13.0%，刷新了该类组件效率的世界纪录，为下一代低成本、环境友好型太阳能电池产业化奠定了坚实基础。
二 | 该成果近日在国际学术期刊《自然·材料》发表。 铜锌锡硫硒是一种新型薄膜光伏材料，由铜、锌、锡等地球储量丰富、价格低廉且环境友好的元素组成，被认为是下一代可持续太阳能电池的重要方向，但是这种新型薄膜光伏材料的器件尺寸一旦放大，薄膜均匀性就会急剧下降，效率也会降低。为此，科研团队从分子尺度入手，引入甲酰胺来精准调控金属离子与有机分子的配位结构，成功解决了这一问题。
△基于涂布的铜锌锡硫硒薄膜光伏组件及其光电转换性能
在此基础上，科研团队开发出适合大面积连续生产的溶液涂布工艺，在10平方厘米的基板上制得了高度均匀的铜锌锡硫硒薄膜。用这块薄膜做成1平方厘米的小面积电池，认证效率可达14.2%;通过激光划线做成6节子电池串联、总面积10.5平方厘米的组件认证效率仍可达到13.0%。 据了解，这项技术为低成本、绿色薄膜光伏组件的规模化制造提供了新思路。
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